Pivotable support device and display device

Abstract

A pivotable support apparatus for supporting a foldable display panel is provided. The pivotable support apparatus includes a sliding groove structure (215); a first rotating rod (211) and a second rotating rod (212) slidingly and rotatably fitted with the sliding groove structure (215); a first rotating plate (15); a second rotating plate (16); a first connecting rod (205) rotatably attached to the first rotating rod (211) and configured to be slidably moved relative to the first rotating plate (15); and a second connecting rod (206) rotatably attached to the second rotating rod (212) and configured to be slidably moved relative to the second rotating plate (16).

Description

Technical Field

[0001] This invention relates to display technology, and more specifically, to a pivotable support device and a display device. Background Technology

[0002] In recent years, portable display devices, such as foldable flexible display devices, have become a focus of research and development in display technology. Flexible display devices are bendable or deformable display devices with flexible display panels. Examples of flexible display devices include flexible organic light-emitting diode (OLED) devices, flexible electrophoretic display (EPD) devices, and flexible liquid crystal display (LCD) devices. As a new generation of display devices, flexible display devices are thinner and more compact, with high contrast, high responsiveness, and high brightness. They also offer full color and wide viewing angles. Flexible display devices have wide applications in mobile phones, personal digital assistants (PDAs), digital cameras, airborne displays, laptops, wall-mounted televisions, and various military applications. Flexible display devices include flexible array substrates. The substrate of the flexible array substrate can be made of flexible materials such as plastics. Summary of the Invention

[0003] In one aspect, this disclosure provides a pivotable support device for supporting a foldable display panel, comprising: a sliding groove structure; a first rotating rod and a second rotating rod slidably and rotatably attached to the sliding groove structure; a first rotating plate; a second rotating plate; a first connecting rod rotatably attached to the first rotating rod and configured to be slidably movable relative to the first rotating plate; and a second connecting rod rotatably attached to the second rotating rod and configured to be slidably movable relative to the second rotating plate.

[0004] Optionally, the sliding groove structure includes a first arcuate groove and a second arcuate groove; the first rotating rod includes a first arcuate rod head configured to move slidably and rotatably in the first arcuate groove; and the second rotating rod includes a second arcuate rod head configured to move slidably and rotatably in the second arcuate groove.

[0005] Optionally, the sliding groove structure includes a first portion and a second portion, which are fixedly attached to each other to form a first arcuate groove and a second arcuate groove; the first portion includes a first arcuate concave surface and a second arcuate concave surface; the first arcuate rod head includes a first arcuate convex surface that at least partially contacts the first arcuate concave surface; and the second arcuate rod head includes a second arcuate convex surface that at least partially contacts the second arcuate concave surface.

[0006] Optionally, the pivotable support device further includes a cladding plate; wherein the first portion is fixedly attached to the cladding plate.

[0007] Optionally, the pivotable support device further includes a first retaining plate and a second retaining plate; a first sliding groove located between the first retaining plate and the first rotating plate and configured to allow the first connecting rod to slide therein; and a second sliding groove located between the second retaining plate and the second rotating plate and configured to allow the second connecting rod to slide therein.

[0008] Optionally, the first retaining plate is fixedly attached to the first rotating plate; and the second retaining plate is fixedly attached to the second rotating plate.

[0009] Optionally, the pivotable support device further includes a first frame and a second frame; wherein the first connecting rod is fixedly attached to the first frame; and the second connecting rod is fixedly attached to the second frame; wherein the first frame and the first connecting rod are configured to be slidably movable relative to the first rotating plate; and the second frame and the second connecting rod are configured to be slidably movable relative to the second rotating plate.

[0010] Optionally, the pivotable support device further includes a first drive rod and a second drive rod; wherein the first rotating plate is fixedly attached to the first drive rod; and the second rotating plate is fixedly attached to the second drive rod.

[0011] Optionally, the pivotable support device further includes a first crankshaft and a second crankshaft, the first crankshaft being attached to a first pin hole in the first drive rod, and the second crankshaft being attached to a second pin hole in the second drive rod; wherein the first crankshaft and the first drive rod are configured to rotate together; and the second crankshaft and the second drive rod are configured to rotate together.

[0012] Optionally, the pivotable support device further includes a damping slider configured to resiliently press against the first crankshaft and the second crankshaft to provide damping resistance as the first crankshaft and the first drive rod rotate relative to the second crankshaft and the second drive rod.

[0013] Optionally, the first crankshaft includes a first cam rod, and the second crankshaft includes a second cam rod; the damping slider includes a first recess, a second recess, a third recess, and a fourth recess; in the unfolded state of the pivotable support device, the first cam rod is configured to engage with the first recess, and the second cam rod is configured to engage with the second recess; and in the folded state of the pivotable support device, the first cam rod is configured to engage with the third recess, and the second cam rod is configured to engage with the fourth recess.

[0014] Optionally, the damping slider further includes a first groove located between the first recess and the third recess, and a second groove located between the second recess and the fourth recess; and during movement between the folded and unfolded states of the pivotable support device, the first cam rod contacts and slides on the surface of the first groove, and the second cam rod contacts and slides on the surface of the second groove, thereby damping the movement of the pivotable support device.

[0015] Optionally, the pivotable support device further includes one or more springs configured to apply force to the damping slider to maintain contact between the damping slider and the first cam rod and the second cam rod.

[0016] Optionally, the damping slider further includes one or more spring shafts extending through the one or more springs respectively; and the pivotable support device further includes a fastener comprising one or more receiving holes configured to receive the ends of the one or more spring shafts respectively.

[0017] Optionally, the pivotable support device further includes a hinge structure comprising a first spindle and a second spindle; and a synchronizing gear configured to synchronize the rotation of the first spindle and the second spindle; wherein the synchronizing gear comprises a first gear and a second gear configured to rotate about the first spindle and the second spindle, respectively; and the first gear and the second gear are configured to engage with each other.

[0018] Optionally, the pivotable support device further includes a first drive rod, a first crankshaft attached to the first drive rod, a second drive rod, and a second crankshaft attached to the second drive rod; wherein the first crankshaft includes a third gear configured to engage with the first gear; the second crankshaft includes a fourth gear configured to engage with the second gear; and the movement of the first drive rod, the first crankshaft, the second drive rod, and the second crankshaft is synchronized by engagement between the first gear, the second gear, the third gear, and the fourth gear.

[0019] Optionally, the pivotable support device further includes a sliding plate fastener; a first drive rod; a second drive rod; a first sliding plate slidably attached to the first drive rod; and a second sliding plate slidably attached to the second drive rod; wherein the first sliding plate and the second sliding plate are fixedly attached to the sliding plate fastener; and wherein, in the folded state of the pivotable support device, a first angle between the first sliding plate and the second sliding plate is greater than a second angle between the first drive rod and the second drive rod.

[0020] Optionally, the first drive rod includes a first groove; the second drive rod includes a second groove; the first sliding plate includes a first shaft configured to be received in the first groove to allow the first sliding plate to be slidably moved relative to the first drive rod; and the second sliding plate includes a second shaft configured to be received in the second groove to allow the second sliding plate to be slidably moved relative to the second drive rod.

[0021] Optionally, the first groove includes a first sub-groove and a second sub-groove connected to each other; the second groove includes a third sub-groove and a fourth sub-groove connected to each other; the angle between the extending directions of the first sub-groove and the second sub-groove is greater than 0 degrees and less than 180 degrees; the angle between the extending directions of the third sub-groove and the fourth sub-groove is greater than 0 degrees and less than 180 degrees; and in the folded state of the pivotable support device, the first shaft is configured to be received in the second sub-groove, and the second shaft is configured to be received in the fourth sub-groove.

[0022] Optionally, the sliding plate fastener includes a first fastening pin hole and a second fastening pin hole; the first sliding plate includes a third shaft configured to engage with the first fastening pin hole; and the second sliding plate includes a fourth shaft configured to engage with the second fastening pin hole.

[0023] In another aspect, this disclosure provides a display device including a foldable display panel and a pivotable support device described herein or manufactured by the methods described herein. Attached Figure Description

[0024] The following figures are merely illustrative examples based on various disclosed embodiments and are not intended to limit the scope of the invention.

[0025] FIG. 1 This is a perspective view of a pivotable support device in an unfolded state and a foldable display panel supported thereon, according to some embodiments of the present disclosure.

[0026] FIG. 2 This is an exploded view of a pivotable support device in an unfolded state and a foldable display panel supported thereon, according to some embodiments of the present disclosure.

[0027] FIG. 3 This is a perspective view of a pivotable support device in a folded state according to some embodiments of the present disclosure.

[0028] FIG. 4A This is a perspective view of a hinge assembly in a pivotable support device in an unfolded state according to some embodiments of the present disclosure.

[0029] FIG. 4B This is an exploded view of a hinge assembly in a pivotable support device in an unfolded state according to some embodiments of the present disclosure.

[0030] FIG. 5 This is a cross-sectional side view of a pivotable support device in an unfolded state according to some embodiments of the present disclosure.

[0031] FIG. 6 This is a cross-sectional side view of a pivotable support device in a folded state according to some embodiments of the present disclosure.

[0032] FIG. 7 This is a perspective view of a display device having a pivotable support device in a folded state, according to some embodiments of the present disclosure.

[0033] FIG. 8A This is a perspective view of a sliding groove assembly in a pivotable support device in an unfolded state according to some embodiments of the present disclosure.

[0034] FIG. 8B This is a perspective view of a sliding groove assembly in a folded pivotable support device according to some embodiments of the present disclosure.

[0035] FIG. 8C This is a perspective view of a first rotating plate in a pivotable support device according to some embodiments of the present disclosure.

[0036] FIG. 8DThis is a perspective view of a second rotating plate in a pivotable support device according to some embodiments of the present disclosure.

[0037] FIG. 9 This is an exploded view of a sliding groove assembly in a pivotable support device in an unfolded state, according to some embodiments of the present disclosure.

[0038] FIG. 10 This is an exploded view of the sliding groove structure and cladding plate in a pivotable support device according to some embodiments of the present disclosure.

[0039] FIG. 11 yes FIG. 9 An enlarged view of the area surrounding the sliding groove structure.

[0040] FIG. 12 This is a cross-sectional side view of a pivotable support device in an unfolded state according to some embodiments of the present disclosure.

[0041] FIG. 13 This is a perspective view of a damping component in a pivotable support device in an deployed state according to some embodiments of the present disclosure.

[0042] FIG. 14 This is an exploded view of a damping component in a pivotable support device in an deployed state, according to some embodiments of the present disclosure.

[0043] FIG. 15A This is a perspective view of a first crankshaft in a pivotable support device according to some embodiments of the present disclosure.

[0044] FIG. 15B This is a perspective view of a second crankshaft in a pivotable support device according to some embodiments of the present disclosure.

[0045] FIG. 16 This is a perspective view of a damping slider in a pivotable support device according to some embodiments of the present disclosure.

[0046] FIG. 17A This is a perspective view of a first sliding plate in a pivotable support device according to some embodiments of the present disclosure.

[0047] FIG. 17B This is a perspective view of a second sliding plate in a pivotable support device according to some embodiments of the present disclosure.

[0048] FIG. 18 This is a schematic diagram illustrating the structure of the first and second grooves according to some embodiments of the present disclosure. Detailed Implementation

[0049] This disclosure will now be described in more detail with reference to the following embodiments. It should be noted that the following description of some embodiments presented herein is for illustrative and descriptive purposes only. It is not exhaustive or limited to the precise forms disclosed.

[0050] This disclosure provides, in particular, a pivotable support device and a display device that substantially eliminate one or more problems caused by the limitations and disadvantages of the prior art. In one aspect, this disclosure provides a pivotable support device for supporting a foldable display panel. In some embodiments, the pivotable support device includes: a sliding groove structure; a first rotating rod and a second rotating rod slidably and rotatably attached to the sliding groove structure; a first rotating plate; a second rotating plate; a first connecting rod rotatably attached to the first rotating rod and configured to be slidably movable relative to the first rotating plate; and a second connecting rod rotatably attached to the second rotating rod and configured to be slidably movable relative to the second rotating plate.

[0051] FIG. 1 This is a perspective view of a pivotable support device in an unfolded state and a foldable display panel supported thereon, according to some embodiments of the present disclosure. FIG. 2 This is an exploded view of a pivotable support device in an unfolded state and a foldable display panel supported thereon, according to some embodiments of the present disclosure. FIG. 3 This is a perspective view of a pivotable support device in a folded state according to some embodiments of this disclosure. Reference FIGS. 1-3 In some embodiments, the pivotable support device includes a hinge structure 10; and a first frame 203 and a second frame 204, which are connected to the hinge structure 10 and configured to support a foldable display panel 100 placed thereon. Optionally, the pivotable support device also includes a first rear cover 201 and a second rear cover 202 respectively covering the rear sides of the first frame 203 and the second frame 204. The first rear cover 201 and the second rear cover 202 are located on the side of the first frame 203 and the second frame 204 away from the foldable display panel 100. FIG. 1 and FIG. 2 As shown, the foldable display panel 100 can be supported on the front side of the first frame 203 and the second frame 204. FIG. 3 As shown, in some embodiments, the pivotable support device further includes a cladding 200 for covering various components of the pivotable support device.

[0052] FIG. 4A This is a perspective view of a hinge assembly in a pivotable support device in an unfolded state according to some embodiments of the present disclosure. FIG. 4BThis is an exploded view of a hinge assembly in a pivotable support device in an unfolded state according to some embodiments of the present disclosure. FIG. 5 This is a cross-sectional side view of a hinge assembly in a pivotable support device in an unfolded state according to some embodiments of the present disclosure. FIG. 5 It is along FIG. 4A A cross-sectional side view of the pivotable support device along line A-A' in the diagram. FIG. 6 This is a cross-sectional side view of a pivotable support device in a folded state according to some embodiments of the present disclosure. FIG. 7 This is a perspective view of a display device having a pivotable support device in a folded state, according to some embodiments of the present disclosure. (Refer to...) FIGS. 4A-7 In some embodiments, the hinge structure includes a first spindle 320 and a second spindle 330, which respectively provide a first axis of rotation and a second axis of rotation parallel to each other. In some embodiments, the pivotable support device further includes a synchronizing gear configured to synchronize the rotation of the first spindle 320 and the second spindle 330. The synchronizing gear includes a first gear 103 and a second gear 104 configured to rotate about the first spindle 320 and the second spindle 330, respectively. The first gear 103 and the second gear 104 are configured to engage with each other.

[0053] In some embodiments, the pivotable support device further includes a first drive rod 17, a first crankshaft 21 attached to the first drive rod 17, a second drive rod 18, and a second crankshaft 22 attached to the second drive rod 18. The first crankshaft 21 includes a third gear 401 configured to engage with a first gear 103 (see also...). FIG. 15A The second crankshaft 22 includes a fourth gear 401' configured to engage with the second gear 104 (see also...). FIG. 15B The movement of the first drive rod 17, the first crankshaft 21, the second drive rod 18, and the second crankshaft 22 is synchronized by the engagement of the first gear 103, the second gear 104, the third gear 401, and the fourth gear 401'.

[0054] In one example, when the pivotable support device changes from an unfolded state to a folded state, or when it changes from a folded state to an unfolded state, the first drive rod 17 drives the first crankshaft 21 to rotate. The third gear 401 of the first crankshaft 21 engages with the first gear 103, and the third gear 401 drives the first gear 103 to rotate. The first gear 103 engages with the second gear 104, and the first gear 103 drives the second gear 104 to rotate. The second gear 104 engages with the fourth gear 401' of the second crankshaft 22, and the second gear 104 drives the fourth gear 401' to rotate. The second crankshaft 22 then drives the second drive rod 18 to rotate.

[0055] In another example, when the pivotable support device changes from a folded state to an unfolded state, or when the pivotable support device changes from an unfolded state to a folded state, the second drive rod 18 drives the second crankshaft 22 to rotate. The fourth gear 401' of the second crankshaft 22 engages with the second gear 104, and the fourth gear 401' drives the second gear 104 to rotate. The second gear 104 engages with the first gear 103, and the second gear 104 drives the first gear 103 to rotate. The first gear 103 engages with the third gear 401 of the first crankshaft 21, and the first gear 103 drives the third gear 401 to rotate. The first crankshaft 21, in turn, drives the first drive rod 17 to rotate.

[0056] In some embodiments, the pivotable support device further includes a sliding groove assembly. FIG. 8A This is a perspective view of a sliding groove assembly in a pivotable support device in an unfolded state according to some embodiments of the present disclosure. FIG. 8B This is a perspective view of a sliding groove assembly in a folded pivotable support device according to some embodiments of the present disclosure. FIG. 9 This is an exploded view of a sliding groove assembly in a pivotable support device in an unfolded state, according to some embodiments of the present disclosure. FIG. 10 This is an exploded view of the sliding groove structure and cladding plate in a pivotable support device according to some embodiments of this disclosure. (See also:) FIGS. 8A-10 In some embodiments, the pivotable support device includes a sliding groove structure 215; a first rotating rod 211 and a second rotating rod 212 slidably and rotatably attached to the sliding groove structure 215; a first rotating plate 15; a second rotating plate 16; a first connecting rod 205 rotatably attached to the first rotating rod 211 and configured to be slidably movable relative to the first rotating plate 15; and a second connecting rod 206 rotatably attached to the second rotating rod 212 and configured to be slidably movable relative to the second rotating plate 16. As used herein, the term "rotatably attached" means that two components are engaged such that the two components are mechanically coupled but can still rotate relative to each other about an axis. For example, the first rotating rod 211 is rotatably attached to the sliding groove structure 215 in such a way that the first rotating rod 211 is capable of rotating, for example, about an axis, relative to the sliding groove structure 215 between at least a first rotational position and a second rotational position. As used herein, the term "slidably attached" means that two components are engaged such that they are mechanically coupled but can still slide relative to each other. For example, a first rotating rod 211 is slidably attached to a sliding groove structure 215 in such a way that the first rotating rod 211 is able to slide relative to the sliding groove structure 215, for example, on the surface of the sliding groove structure 215, between at least a first position and a second position.

[0057] In some embodiments, the sliding groove structure 215 includes a first arcuate groove AG1 and a second arcuate groove AG2. The first rotating rod 211 includes a first arcuate rod head AH1 configured to slide and rotate within the first arcuate groove AG1. The second rotating rod 212 includes a second arcuate rod head AH2 configured to slide and rotate within the second arcuate groove AG2.

[0058] Various suitable implementations can be implemented to provide the sliding groove structure 215. In some embodiments, the sliding groove structure 215 includes a first portion 218 and a second portion 219, which are fixedly attached to each other to form a first arcuate groove AG1 and a second arcuate groove AG2. The first portion 218 and the second portion 219 can be fixedly attached to each other by various suitable means. In one example, the first portion 218 and the second portion 219 are welded together. In another example, the first portion 218 and the second portion 219 are attached together by one or more screws.

[0059] FIG. 11 yes FIG. 9 An enlarged view of the area surrounding the sliding groove structure. (Refer to...) FIGS. 8A-11 The first part 218 includes a first arcuate concave surface CCS1 and a second arcuate concave surface CCS2. The first arcuate clubhead AH1 includes a first arcuate convex surface CVS1 that at least partially contacts the first arcuate concave surface CCS1. The second arcuate clubhead AH2 includes a second arcuate convex surface CVS2 that at least partially contacts the second arcuate concave surface CCS2.

[0060] Reference FIG. 10 The pivotable support device includes a cladding plate 200 configured to at least partially accommodate the first portion 218. Optionally, the first portion 218 is fixedly attached to the cladding plate 200. The first portion 218 can be fixedly attached to the cladding plate 200 by various suitable means. In one example, the first portion 218 is attached to the cladding plate 200 by one or more screws. In another example, the first portion 218 is welded to the cladding plate 200.

[0061] FIG. 8C This is a perspective view of a first rotating plate in a pivotable support device according to some embodiments of the present disclosure. FIG. 8D This is a perspective view of a second rotating plate in a pivotable support device according to some embodiments of the present disclosure. Reference FIG. 8C and FIG. 8D In some embodiments, the first rotating plate includes a first sliding groove SLT1, and in some embodiments, the second rotating plate includes a second sliding groove SLT2.

[0062] In some embodiments, the pivotable support device further includes a first retaining plate 207 and a second retaining plate 208. A first sliding groove SLT1 is located between the first retaining plate 207 and the first rotating plate 15. A first connecting rod 205 is configured to be slidably movable in the first sliding groove SLT1. A second sliding groove SLT2 is located between the second retaining plate 208 and the second rotating plate 16. A second connecting rod 206 is configured to be slidably movable in the second sliding groove SLT2. The first sliding groove SLT1 is configured to allow the first connecting rod 205 to be slidably movable relative to the first rotating plate 15. The second sliding groove SLT2 is configured to allow the second connecting rod 206 to be slidably movable relative to the second rotating plate 16.

[0063] Various suitable embodiments can be implemented to provide the first retaining plate 207 and the second retaining plate 208. In some embodiments, the first retaining plate 207 is fixedly attached to the first rotating plate 15; the second retaining plate 208 is fixedly attached to the second rotating plate 16. The first retaining plate 207 can be fixedly attached to the first rotating plate 15 by various suitable means; the second retaining plate 208 can be fixedly attached to the second rotating plate 16 by various suitable means. In one example, the first retaining plate 207 is attached to the first rotating plate 15 by one or more screws. In another example, the first retaining plate 207 is welded to the first rotating plate 15. In one example, the second retaining plate 208 is attached to the second rotating plate 16 by one or more screws. In another example, the second retaining plate 208 is welded to the second rotating plate 16.

[0064] Reference FIG. 4A and FIG. 4B In some embodiments, a first rotating plate 15 is fixedly attached to a first drive rod 17; a second rotating plate 16 is fixedly attached to a second drive rod 18. The first rotating plate 15 can be fixedly attached to the first drive rod 17 by various suitable means; and the second rotating plate 16 can be fixedly attached to the second drive rod 18 by various suitable means. In one example, the first rotating plate 15 is attached to the first drive rod 17 by one or more screws. In another example, the first rotating plate 15 is welded to the first drive rod 17. In one example, the second rotating plate 16 is attached to the second drive rod 18 by one or more screws. In another example, the second rotating plate 16 is welded to the second drive rod 18.

[0065] The first rotating rod 211 can be rotatably attached to the first connecting rod 205 by various suitable means; the second rotating rod 212 can be rotatably attached to the second connecting rod 206 by various suitable means. (Refer to...) FIG. 9In some embodiments, the first rotating rod 211 is rotatably attached to the first connecting rod 205 via a first pin 213; the second rotating rod 212 is rotatably attached to the second connecting rod 206 via a second pin 214. The pivotable support device also includes a first clamping spring 216 for locking the first pin 213 in place and a second clamping spring 217 for locking the second pin 214 in place.

[0066] In some embodiments, the pivotable support device further includes a support plate 300. In some embodiments, the support plate 300 includes a first support portion 301, a second support portion 302, and a third support portion 303. The first support portion 301 and the second support portion 302 are spaced apart by a sliding groove structure. The third support portion 303 and the second support portion 302 are spaced apart by another sliding groove structure. (Refer to...) FIG. 5 In some embodiments, the rotatable support device further includes a first sliding plate 13 and a second sliding plate 14 on opposite sides of the support plate 300. Optionally, in the unfolded state of the pivotable support device, the support plate 300, the first sliding plate 13, and the second sliding plate 14 constitute a portion of a substantially flat surface for supporting the foldable display panel. As used herein, the term "substantially flat surface" may include minor deviations from the geometry of a flat surface, for example, deviations due to manufacturing processes. The term "substantially flat" includes cases of partial convexity or partial concavity as well as cases of complete flatness.

[0067] FIG. 12 This is a cross-sectional side view of a pivotable support device in an unfolded state according to some embodiments of the present disclosure. FIG. 12 It is a pivotable support device along FIG. 4A A side view of the cross-section along line B-B'. (Refer to...) FIGS. 4A-9 as well as FIG. 12When the first drive rod 17 and / or the second drive rod 18 rotate, they drive the first rotating plate 15 and / or the second rotating plate 16 (and the first retaining plate 207 and / or the second retaining plate 208) to rotate. When the first rotating plate 15 and the first retaining plate 207 rotate, the first connecting rod 205 is configured to slidably move in the first sliding groove SLT1. When the second rotating plate 16 and the second retaining plate 208 rotate, the second connecting rod 206 is configured to slidably move in the second sliding groove SLT2. When the first connecting rod 205 slidably moves, it drives the first rotating rod 211 to slide and rotate about the first arcuate groove AG1. When the second connecting rod 206 slidably moves, it drives the second rotating rod 212 to slide and rotate about the second arcuate groove AG2. Therefore, the first drive rod 17 and the first rotating rod 211 rotate about different axes, and the second drive rod 18 and the second rotating rod 212 rotate about different axes. When the pivotable support device is folded, the first connecting rod 205 is configured to slide slidably in the first sliding groove SLT1, thereby moving the first connecting rod 205 further away from the first rotating plate 15 (e.g., "outward"); the second connecting rod 206 is configured to slide slidably in the second sliding groove SLT2, thereby moving the second connecting rod 206 further away from the second rotating plate 16 (e.g., "outward"). When the pivotable support device is unfolded, the first connecting rod 205 is configured to slide slidably in the first sliding groove SLT1, thereby moving the first connecting rod 205 closer to the first rotating plate 15 (e.g., "inward"); the second connecting rod 206 is configured to slide slidably in the second sliding groove SLT2, thereby moving the second connecting rod 206 closer to the second rotating plate 16 (e.g., "inward").

[0068] refer to FIG. 2 In some embodiments, the pivotable support device further includes a first frame 203 and a second frame 204. In some embodiments, a first connecting rod 205 is fixedly attached to the first frame 203; a second connecting rod 206 is fixedly attached to the second frame 204. The first connecting rod 205 can be fixedly attached to the first frame 203 by various suitable means; while the second connecting rod 206 can be fixedly attached to the second frame 204 by various suitable means. In one example, the first connecting rod 205 is attached to the first frame 203 by one or more screws. In another example, the first connecting rod 205 is welded to the first frame 203. In one example, the second connecting rod 206 is attached to the second frame 204 by one or more screws. In another example, the second connecting rod 206 is welded to the second frame 204.

[0069] In some embodiments, the first frame 203 and the first connecting rod 205 are configured to be slidably movable relative to the first rotating plate 15; the second frame 204 and the second connecting rod 206 are configured to be slidably movable relative to the second rotating plate 16. When the pivotable support device is folded, the first connecting rod 205 is configured to be slidably movable within a first sliding groove SLT1, thereby causing the first frame 203 and the first connecting rod 205 to move further away from the first rotating plate 15 (e.g., "outward"); the second connecting rod 206 is configured to be slidably movable within a second sliding groove SLT2, thereby causing the second frame 204 and the second connecting rod 206 to move further away from the second rotating plate 16 (e.g., "outward"). When the pivotable support device is deployed, the first connecting rod 205 is configured to slide slidably in the first sliding groove SLT1, thereby moving the first frame 203 and the first connecting rod 205 closer to the first rotating plate 15 (e.g., "inward"); the second connecting rod 206 is configured to slide slidably in the second sliding groove SLT2, thereby moving the second frame 204 and the second connecting rod 206 closer to the second rotating plate 16 (e.g., "inward").

[0070] In some embodiments, the pivotable support device includes a damping component configured to dampen movement of the pivotable support device during folding or unfolding. FIG. 13 This is a perspective view of a damping component in a pivotable support device in an deployed state according to some embodiments of the present disclosure. FIG. 14 This is an exploded view of a damping component in a pivotable support device in an deployed state, according to some embodiments of this disclosure. Reference FIG. 13 and FIG. 14 In some embodiments, the first crankshaft 21 is attached to the first pin hole PH1 in the first drive rod 17, and the second crankshaft 22 is attached to the second pin hole PH2 in the second drive rod 18. FIG. 13 The diagram shows a first crankshaft 21 attached to a first pin hole PH1 and a second crankshaft 22 attached to a second pin hole PH2. FIG. 14 An exploded view is shown. The first crankshaft 21 and the first drive rod 17 are configured to rotate together; and the second crankshaft 22 and the second drive rod 18 are configured to rotate together.

[0071] In some embodiments, the pivotable support device further includes a damping slider 24 configured to elastically press against the first crankshaft 21 and the second crankshaft 22 to provide damping resistance as the first crankshaft 21 and the first drive rod 17 rotate relative to the second crankshaft 22 and the second drive rod 18. By providing damping resistance with the damping slider 24, rotation of the hinge structure of the pivotable support device can be stopped at any time when the external force is removed.

[0072] FIG. 15AThis is a perspective view of a first crankshaft in a pivotable support device according to some embodiments of the present disclosure. FIG. 15B This is a perspective view of a second crankshaft in a pivotable support device according to some embodiments of the present disclosure. (Refer to...) FIG. 15A The first crankshaft includes a first camshaft 402, a third gear 401, and a first end pinion 403. The third gear 401 is located in the middle of the first crankshaft, and the first camshaft 402 and the first end pinion 403 are located at opposite ends of the first crankshaft. (Refer to...) FIG. 15B The second crankshaft includes a second cam rod 402', a fourth gear 401', and a second end 403'. The fourth gear 401' is located in the middle of the second crankshaft, and the second cam rod 402' and the second end 403' are located at opposite ends of the second crankshaft. The first end 403' is configured to be attached to a first pin hole PH1 in the first drive rod 17, and the second end 403' is configured to be attached to a second pin hole PH2 in the second drive rod 18.

[0073] FIG. 16 This is a perspective view of a damping slider in a pivotable support device according to some embodiments of the present disclosure. (Refer to...) FIG. 16 In some embodiments, the damping slider includes a first recess 407, a second recess 407', a third recess 408, and a fourth recess 408'. (See reference...) FIG. 13 , FIG. 14 , FIG. 15A , FIG. 15B and FIG. 16 In the deployed state of the pivotable support device, the first cam rod 402 is configured to engage with the first recess 407, and the second cam rod 402' is configured to engage with the second recess 407'. (Reference) FIG. 13 , FIG. 14 , FIG. 15A , FIG. 15B and FIG. 16In the folded state of the pivotable support device, the first cam rod 402 is configured to engage with the third recess 408, and the second cam rod 402' is configured to engage with the fourth recess 408'. When the pivotable support device transitions from the unfolded state to the folded state, the first cam rod 402 must overcome a certain amount of resistance to slide out of the first recess 407, and similarly, the second cam rod 402' must overcome a certain amount of resistance to slide out of the second recess 407'. When the pivotable support device transitions from the folded state to the unfolded state, the first cam rod 402 must overcome a certain amount of resistance to slide out of the third recess 408, and similarly, the second cam rod 402' must overcome a certain amount of resistance to slide out of the fourth recess 408'. The engagement between the first cam rod 402 and the first recess 407, and the engagement between the second cam rod 402' and the second recess 407', provide a positional constraint function in the unfolded state of the pivotable support device. The engagement between the first cam rod 402 and the third recess 408, and the engagement between the second cam rod 402' and the fourth recess 408', provide a positional restraint function in the folded state of the pivotable support device.

[0074] In some embodiments, the damping slider further includes a first groove 405 located between a first recess 407 and a third recess 408, and a second groove 406 located between a second recess 407' and a fourth recess 408'. The first groove 405 is relatively shallower than the first recess 407 and the third recess 408; and the second groove 406 is relatively shallower than the second recess 407' and the fourth recess 408'. During movement between a folded state and an unfolded state of the pivotable support device, a first cam rod 402 contacts and slides on the surface of the first groove 405, and a second cam rod 402' contacts and slides on the surface of the second groove 406, thereby damping the movement of the pivotable support device. For example, when the pivotable support device transitions from an unfolded state to a folded state, the first cam rod 402 first slides out of the first recess 407, then slides on the surface of the first groove 405, and slides into the third recess 408; similarly, the second cam rod 402' first slides out of the second recess 407', slides on the surface of the second groove 406, and then slides into the fourth recess 408'. In another example, when the pivotable support device transitions from a folded state to an unfolded state, the first cam rod 402 first slides out of the third recess 408, then slides on the surface of the first groove 405, and slides into the first recess 407; similarly, the second cam rod 402' first slides out of the fourth recess 408', slides on the surface of the second groove 406, and then slides into the second recess 407'.

[0075] In some embodiments, the pivotable support device further includes one or more springs configured to apply force to the damping slider 24 to maintain contact between the damping slider 24 and the first cam rod 402 and the second cam rod 402'. (Reference) FIGS. 13-16 In one example, the pivotable support device includes a first spring 101 and a second spring 102. The first spring 101 and the second spring 102 are configured to apply a force to the damping slider to keep the damping slider 24 in contact with the first cam rod 402 and the second cam rod 402'.

[0076] In some embodiments, the damping slider 24 further includes one or more spring shafts 410 extending through one or more springs, respectively. In one example, the damping slider 24 also includes a first spring shaft 411 extending through a first spring 101 and a second spring shaft 412 extending through a second spring 102.

[0077] In some embodiments, the pivotable support device further includes a fastener 19. The fastener 19 includes one or more receiving holes configured to receive the ends of one or more spring shafts, respectively. In one example, the fastener 19 includes a first receiving hole RH1 configured to receive an end of a first spring shaft 411, and a second receiving hole RH2 configured to receive an end of a second spring shaft 412.

[0078] Reference FIG. 14 In some embodiments, the rotatable support device further includes a sliding plate fastener 23. (See also...) FIG. 4A , FIG. 4B , FIGS. 5-7 and FIG. 12 In some embodiments, the rotatable support device further includes a first sliding plate 13 and a second sliding plate 14. (See also...) FIG. 4A and FIG. 4B The first sliding plate 13 is slidably attached to the first drive rod 17; the second sliding plate 14 is slidably attached to the second drive rod 18. Optionally, the first sliding plate 13 and the second sliding plate 14 are fixedly attached to the sliding plate fastener 23.

[0079] In some embodiments, reference FIG. 6 In the folded state of the pivotable support device, the first included angle α between the first sliding plate 13 and the second sliding plate 14 is greater than the second included angle between the first drive rod 17 and the second drive rod 18. FIG. 6The second included angle is zero. In some embodiments, the second included angle is in the range of 0 to 10 degrees, for example, 0 to 1 degree, 1 to 2 degrees, 2 to 3 degrees, 3 to 4 degrees, 4 to 5 degrees, 5 to 6 degrees, 6 to 7 degrees, 7 to 8 degrees, 8 to 9 degrees, or 9 to 10 degrees. In some embodiments, the first included angle α is in the range of 10 to 75 degrees, for example, 10 to 15 degrees, 15 to 20 degrees, 20 to 25 degrees, 25 to 30 degrees, 30 to 35 degrees, 35 to 40 degrees, 40 to 45 degrees, 45 to 50 degrees, 50 to 55 degrees, 55 to 60 degrees, 60 to 65 degrees, 65 to 70 degrees, or 70 to 75 degrees.

[0080] In some embodiments, in the folded state of the pivotable support device, the first sliding plate 13 and the second sliding plate 14 are spaced apart by a first distance d1 when they are respectively connected to the sliding plate fastener 23. The first sliding plate 13 and the second sliding plate 14 are spaced apart by a second distance d2 when they are respectively slidably attached to the first drive rod 17 and the second drive rod 18. Optionally, the first distance d1 is greater than the second distance d2. Optionally, the ratio of the first distance to the second distance is in the range of 3 to 100, for example, 3 to 4, 4 to 5, 5 to 6, 6 to 7, 7 to 8, 8 to 9, 9 to 10, 10 to 12, 12 to 14, 14 to 16, 16 to 18, 18 to 20, 20 to 25, 25 to 30, 30 to 40, 40 to 50, 50 to 60, 60 to 70, 70 to 80, 80 to 90, or 90 to 100.

[0081] FIG. 17A This is a perspective view of a first sliding plate in a pivotable support device according to some embodiments of the present disclosure. FIG. 17B This is a perspective view of a second sliding plate in a pivotable support device according to some embodiments of the present disclosure. (Refer to...) FIG. 4B and FIG. 17A The first sliding plate 13 includes a first shaft 440 and a third shaft 430. (See reference...) FIG. 4B and FIG. 17B The second sliding plate 14 includes a second shaft 460 and a fourth shaft 450.

[0082] In some embodiments, refer to FIG. 6 The first drive rod 17 includes a first groove 340, and the second drive rod 18 includes a second groove 350. A first shaft 440 of the first sliding plate 13 is configured to be received in the first groove 340, thereby allowing the first sliding plate 13 to be slidably moved relative to the first drive rod 17. A second shaft 460 of the second sliding plate 14 is configured to be received in the second groove 350, thereby allowing the second sliding plate 14 to be slidably moved relative to the second drive rod 18.

[0083] FIG. 18This is a schematic diagram illustrating the structure of the first and second grooves according to some embodiments of the present disclosure. (Refer to...) FIG. 18 The first groove 340 includes a first sub-groove 341 and a second sub-groove 342 connected to each other; the second groove 350 includes a third sub-groove 351 and a fourth sub-groove 352 connected to each other. The extending directions of the first sub-groove 341 and the second groove 342 (e.g., FIG. 18 The angle between ED1 and ED2 in the third sub-groove 351 and the fourth sub-groove 352 is greater than 0 degrees and less than 180 degrees. The extending directions of the third sub-groove 351 and the fourth sub-groove 352 (e.g., FIG. 18 The angle between ED3 and ED4 in the reference is greater than 0 degrees and less than 180 degrees. FIG. 6 , FIG. 17A , FIG. 17B and FIG. 18 In the folded state of the pivotable support device, the first shaft 440 is configured to be received in the second sub-recess 342, and the second shaft 460 is configured to be received in the fourth sub-recess 352. (Refer to...) FIG. 12 , FIG. 17A , FIG. 17B and FIG. 18 In the extended state of the pivotable support device, the first shaft 440 is configured to be housed in the first sub-groove 341, and the second shaft 460 is configured to be housed in the third sub-groove 351.

[0084] See FIG. 14 In some embodiments, the sliding plate fastener 23 includes a first fastening pin hole FH1 and a second fastening pin hole FH2. See also FIG. 4B , FIG. 14 , FIG. 17A and FIG. 17B The third shaft 430 of the first sliding plate 13 is configured to engage with the first fastening pin hole FH1, thereby fixing the first sliding plate 13 to the sliding plate fastener 23; the fourth shaft 450 of the second sliding plate 14 is configured to engage with the second fastening pin hole FH2, thereby fixing the second sliding plate 14 to the sliding plate fastener 23.

[0085] In another aspect, this disclosure provides a display device. In some embodiments, the display device includes a foldable display panel and a pivotable support device as described herein. Optionally, the display panel is a liquid crystal display panel. Optionally, the display panel is an organic light-emitting diode display panel. Optionally, the display panel is an electrophoretic display panel. Examples of suitable display devices include, but are not limited to, electronic paper, mobile phones, tablet computers, televisions, monitors, laptop computers, digital photo albums, GPS, etc.

[0086] FIG. 7This is a perspective view of a display device having a pivotable support device in a folded state, according to some embodiments of the present disclosure. (Refer to...) FIG. 7 In its folded state, the foldable display panel 100 has a teardrop-shaped cross-section. A "teardrop shape" generally refers to a shape with two straight sides and an arched upper portion, the two straight sides radiating at acute angles from a lower point, and the arched upper portion extending between the upper ends of the sides. In one example, the "teardrop shape" is formed as a droplet with a spherical form at one end and gradually tapering towards the other, or as a teardrop-like gemstone on an earring, necklace, or ring. By having this unique structure, the thickness of the display device can be significantly reduced, and the localized stress of the foldable display panel 100 can also be significantly reduced, especially when the display device is in its folded state.

[0087] Reference FIG. 7 When the display device is in its folded state, the portion of the foldable display panel 100 that contacts the first sliding plate 13 ( FIG. 7 The portion of P3 in the figure that contacts the foldable display panel 100 and the second sliding plate 14 ( FIG. 7 The third included angle β between P4 and the foldable display panel 100 is greater than the portion of the foldable display panel 100 that contacts the first frame 203. FIG. 7 The portion of P1 in the figure that contacts the foldable display panel 100 with the second frame 204 ( FIG. 7 The fourth included angle between P2 and P2 (in the middle) FIG. 7 The fourth included angle is zero. In some embodiments, the fourth included angle is in the range of 0 to 10 degrees, for example, 0 to 1 degree, 1 to 2 degrees, 2 to 3 degrees, 3 to 4 degrees, 4 to 5 degrees, 5 to 6 degrees, 6 to 7 degrees, 7 to 8 degrees, 8 to 9 degrees, or 9 to 10 degrees. In some embodiments, the third included angle β is in the range of 10 to 75 degrees, for example, 10 to 15 degrees, 15 to 20 degrees, 20 to 25 degrees, 25 to 30 degrees, 30 to 35 degrees, 35 to 40 degrees, 40 to 45 degrees, 45 to 50 degrees, 50 to 55 degrees, 55 to 60 degrees, 60 to 65 degrees, 65 to 70 degrees, or 70 to 75 degrees.

[0088] Reference FIG. 7 When the display device is in its folded state, the portion of the foldable display panel 100 that contacts the first sliding plate 13 ( FIG. 7 The portion of P3 in the figure that contacts the foldable display panel 100 and the second sliding plate 14 ( FIG. 7 The third included angle β between P4 and the first frame 203 and the second frame 204 is greater than the fifth included angle β between P4 and the second frame 204. FIG. 7In some embodiments, the fifth included angle is zero. In some embodiments, the fifth included angle is in the range of 0 to 10 degrees, for example, 0 to 1 degree, 1 to 2 degrees, 2 to 3 degrees, 3 to 4 degrees, 4 to 5 degrees, 5 to 6 degrees, 6 to 7 degrees, 7 to 8 degrees, 8 to 9 degrees, or 9 to 10 degrees. In some embodiments, the third included angle β is in the range of 10 to 75 degrees, for example, 10 to 15 degrees, 15 to 20 degrees, 20 to 25 degrees, 25 to 30 degrees, 30 to 35 degrees, 35 to 40 degrees, 40 to 45 degrees, 45 to 50 degrees, 50 to 55 degrees, 55 to 60 degrees, 60 to 65 degrees, 65 to 70 degrees, or 70 to 75 degrees.

[0089] In some embodiments, in the folded state of the pivotable support device, the first sliding plate 13 and the second sliding plate 14 are spaced apart by a first distance d1 when they are respectively connected to the sliding plate fastener 23. The first frame 203 and the second frame 204 are spaced apart by a third distance d3. Optionally, the first distance d1 is greater than the third distance d3. Optionally, the ratio of the first distance to the third distance is in the range of 3 to 100, for example, 3 to 4, 4 to 5, 5 to 6, 6 to 7, 7 to 8, 8 to 9, 9 to 10, 10 to 12, 12 to 14, 14 to 16, 16 to 18, 18 to 20, 20 to 25, 25 to 30, 30 to 40, 40 to 50, 50 to 60, 60 to 70, 70 to 80, 80 to 90, or 90 to 100.

[0090] In some embodiments, the portion of the foldable display panel 100 that contacts the first frame 203 ( FIG. 7 (P1) and the portion of the foldable display panel 100 that contacts the second frame 204 ( FIG. 7 FIG. 7 In the P2), a fourth distance d4 is separated. Optionally, the first distance d1 is greater than the fourth distance d4. Optionally, the third distance d3 is greater than the fourth distance d4. Optionally, the ratio of the first distance d1 to the fourth distance d4 is in the range of 3 to 100, for example, 3 to 4, 4 to 5, 5 to 6, 6 to 7, 7 to 8, 8 to 9, 9 to 10, 10 to 12, 12 to 14, 14 to 16, 16 to 18, 18 to 20, 20 to 25, 25 to 30, 30 to 40, 40 to 50, 50 to 60, 60 to 70, 70 to 80, 80 to 90, or 90 to 100.

[0091] In another aspect, the present invention provides a method for manufacturing a pivotable support device for supporting a foldable display panel. In some embodiments, the method includes forming a sliding groove structure; forming a first rotating rod and forming a second rotating rod, the first and second rotating rods being slidably and rotatably attached to the sliding groove structure; forming a first rotating plate; forming a second rotating plate; forming a first connecting rod rotatably attached to the first rotating rod and configured to be slidably movable relative to the first rotating plate; and forming a second connecting rod rotatably attached to the second rotating rod and configured to be slidably movable relative to the second rotating plate.

[0092] For illustrative and descriptive purposes, the foregoing description of embodiments of the invention has been provided. It is not exhaustive, nor is it intended to limit the invention to the precise forms or exemplary embodiments disclosed. Therefore, the foregoing description should be considered illustrative rather than restrictive. Clearly, many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to explain the principles of the invention and its best mode of practical application, thereby enabling those skilled in the art to understand the various embodiments of the invention and the various modifications suitable for the particular use or implementation contemplated. The scope of the invention is intended to be defined by the appended claims and their equivalents, wherein, unless otherwise stated, all terms are to be interpreted in their broadest reasonable sense. Therefore, the terms “the invention,” “the present invention,” etc., do not necessarily limit the scope of the claims to the specific embodiments, and references to exemplary embodiments of the invention do not imply limitation of the invention, nor should such limitation be inferred. The invention is defined only by the spirit and scope of the appended claims. Furthermore, these claims may involve the use of “first,” “second,” etc., followed by nouns or elements. These terms should be understood as nomenclature and should not be construed as limiting the number of elements modified by these nomenclatures unless a specific number has been given. Any advantages and benefits described may not apply to all embodiments of the invention. It should be understood that changes to the described embodiments can be made by those skilled in the art without departing from the scope of the invention as defined by the appended claims. Furthermore, the elements and components in this disclosure are not intended for public distribution, whether or not they are expressly recited in the appended claims.

Claims

1. A pivotable support apparatus for supporting a foldable display panel, comprising: a sliding groove structure; a first rotating rod and a second rotating rod, the first rotating rod and the second rotating rod being slidably and rotatably attached to the sliding groove structure; a first rotating plate and a second rotating plate; a first connecting rod and a second connecting rod, wherein the first connecting rod is rotatably attached to the first rotating rod and is configured to be slidably moved relative to the first rotating plate, the second connecting rod is rotatably attached to the second rotating rod and is configured to be slidably moved relative to the second rotating plate; the pivotable support apparatus further comprises a first driving rod, a first crank shaft attached to the first driving rod, a second driving rod, and a second crank shaft attached to the second driving rod; wherein the first rotating plate is fixedly attached to the first driving rod; the second rotating plate is fixedly attached to the second driving rod; a hinge structure comprising a first main shaft and a second main shaft; a synchronization gear configured to synchronize the rotation of the first main shaft and the second main shaft; wherein the synchronization gear comprises a first gear and a second gear, the first gear and the second gear are configured to rotate around the first main shaft and the second main shaft respectively; and the first gear and the second gear are configured to engage with each other; wherein the first crank shaft comprises a third gear configured to engage with the first gear; the second crank shaft comprises a fourth gear configured to engage with the second gear; the movement of the first driving rod, the first crank shaft, the second driving rod, the second crank shaft is synchronized through the engagement between the first gear, the second gear, the third gear and the fourth gear.

2. The pivotable support apparatus of claim 1, wherein, the sliding groove structure comprises a first arc-shaped groove and a second arc-shaped groove; the first rotating rod comprises a first arc-shaped rod head configured to be slidably and rotatably moved in the first arc-shaped groove; and the second rotating rod comprises a second arc-shaped rod head configured to be slidably and rotatably moved in the second arc-shaped groove. the sliding groove structure comprises a first portion and a second portion, the first portion and the second portion are fixedly attached to each other to form the first arc-shaped groove and the second arc-shaped groove; 3. The pivotable support apparatus of claim 2, wherein, the first portion comprises a first arc-shaped concave surface and a second arc-shaped concave surface; the first arc-shaped rod head comprises a first arc-shaped convex surface at least partially in contact with the first arc-shaped concave surface; and the second arc-shaped rod head comprises a second arc-shaped convex surface at least partially in contact with the second arc-shaped concave surface.

4. The pivotable support apparatus according to claim 3, further comprising a cladding plate; the first portion is fixedly attached to the cladding plate. wherein 5. The pivotable support apparatus according to any one of claims 1 to 4, further comprising: a first retaining plate and a second retaining plate; a first sliding slot between the first retaining plate and the first rotating plate and configured to allow the first connecting rod to be slidably moved therein; and a second sliding slot between the second retaining plate and the second rotating plate and configured to allow the second connecting rod to be slidably moved therein. ​ a second sliding groove between the second holding plate and the second rotating plate and configured to allow the second connecting rod to be slidably moved therein.

6. The pivotable support apparatus of claim 5, wherein, the first holding plate is fixedly attached to the first rotating plate; and the second holding plate is fixedly attached to the second rotating plate.

7. The pivotable support apparatus of claim 1, further comprising a first frame and a second frame; wherein, the first connecting rod is fixedly attached to the first frame; and the second connecting rod is fixedly attached to the second frame; wherein the first frame and the first connecting rod are configured to be slidably moved relative to the first rotating plate; and the second frame and the second connecting rod are configured to be slidably moved relative to the second rotating plate.

8. The pivotable support apparatus of claim 1, further comprising a first crank shaft attached to a first pin hole in the first drive rod and a second crank shaft attached to a second pin hole in the second drive rod; wherein the first crank shaft and the first drive rod are configured to rotate together; and the second crank shaft and the second drive rod are configured to rotate together.

9. The pivotable support apparatus of claim 8, further comprising a damping slide configured to elastically press against the first crank shaft and the second crank shaft to provide a damping resistance when the first crank shaft and the first drive rod rotate relative to the second crank shaft and the second drive rod.

10. The pivotable support apparatus of claim 9, wherein, the first crank shaft comprises a first cam rod and the second crank shaft comprises a second cam rod; the damping slide comprises a first notch, a second notch, a third notch, and a fourth notch; in the unfolded state of the pivotable support apparatus, the first cam rod is configured to engage with the first notch and the second cam rod is configured to engage with the second notch; and in the folded state of the pivotable support apparatus, the first cam rod is configured to engage with the third notch and the second cam rod is configured to engage with the fourth notch.

11. The pivotable support apparatus of claim 10, wherein, the damping slide further comprises a first groove between the first notch and the third notch and a second groove between the second notch and the fourth notch; and during movement between the folded state and the unfolded state of the pivotable support apparatus, the first cam rod contacts and slides on a surface of the first groove and the second cam rod contacts and slides on a surface of the second groove, thereby damping the movement of the pivotable support apparatus.

12. The pivotable support apparatus of claim 11, further comprising one or more springs configured to apply a force to the damping slide to maintain the damping slide in contact with the first cam rod and the second cam rod.

13. The pivotable support apparatus of claim 12, wherein, the damping slide further comprises one or more spring shafts extending through the one or more springs, respectively; and The pivotable support apparatus further includes a fastener including one or more receiving holes configured to receive ends of the one or more spring shafts, respectively.

14. The pivotable support apparatus of claim 1, further comprising: a sliding plate fastener; a first sliding plate slidably attached to the first drive rod; and a second sliding plate slidably attached to the second drive rod; wherein the first and second sliding plates are fixedly attached to the sliding plate fastener; and wherein, in a folded state of the pivotable support apparatus, a first included angle between the first and second sliding plates is greater than a second included angle between the first and second drive rods.

15. The pivotable support apparatus of claim 14, wherein, The first drive rod includes a first groove; The second drive rod includes a second groove; The first sliding plate includes a first shaft configured to be received in the first groove to allow the first sliding plate to be slidably moved relative to the first drive rod; and The second sliding plate includes a second shaft configured to be received in the second groove to allow the second sliding plate to be slidably moved relative to the second drive rod.

16. The pivotable support apparatus of claim 15, wherein, The first groove includes a first sub-groove and a second sub-groove connected to each other; The second groove includes a third sub-groove and a fourth sub-groove connected to each other; An included angle between extension directions of the first and second sub-grooves is greater than 0 degrees and less than 180 degrees; An included angle between extension directions of the third and fourth sub-grooves is greater than 0 degrees and less than 180 degrees; and In a folded state of the pivotable support apparatus, the first shaft is configured to be received in the second sub-groove and the second shaft is configured to be received in the fourth sub-groove.

17. The pivotable support apparatus of claim 14, wherein, The sliding plate fastener includes a first fastening pin hole and a second fastening pin hole; The first sliding plate includes a third shaft configured to be engaged with the first fastening pin hole; and The second sliding plate includes a fourth shaft configured to be engaged with the second fastening pin hole.

18. A display apparatus comprising a foldable display panel and the pivotable support apparatus according to any one of claims 1 to 17.

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