Support device and folding display device

Abstract

The application discloses a supporting device and a folding display device, and relates to the technical field of display. The first supporting plate and the second supporting plate in the supporting device are used for supporting the non-bending part of a flexible display module, and the hinge is used for folding or flattening the bending part of the flexible display module. When the supporting device is in a flattened state, the sliding piece has a tendency to slide away from the fixing piece under the elastic force of the first elastic piece, so that the flexible display module can be kept flat under the elastic force. After the folding display device is used for a period of time, if the length of the flexible display module is slightly different in the flattened state and the folded state, the second compression amount of the first elastic piece can gradually change to the first compression amount, so as to compensate for the length change of the flexible display module. Thus, the length of the hinge can be matched with the length of the flexible display module, the flexible display module can be kept flat, and the display effect of the folding display device is better.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a supporting device and a foldable display device. BACKGROUND

[0002] With the development of science and technology, flexible display panels are widely used in foldable display devices due to their good bending performance.

[0003] In the related art, a foldable display device includes a flexible display panel and a supporting device located at one side of the flexible display panel. The flexible display panel has a bending portion and two non-bending portions located at two sides of the bending portion. The supporting device includes a first supporting plate, a second supporting plate and a rotating assembly. The rotating assembly is connected with the first supporting plate and the second supporting plate respectively, and is used to relatively rotate the first supporting plate and the second supporting plate, so that two non-bending portions of the flexible display panel fixed with the first supporting plate and the second supporting plate respectively are relatively rotated, thereby realizing the folding of the display device.

[0004] However, due to the slight difference in length of the flexible display panel in different states of folding and unfolding, the display device of the above-mentioned scheme will generate an irreversible crease at the boundary between the bending portion and the non-bending portion after a period of use, thereby causing poor display effect of the display device. SUMMARY

[0005] The present application provides a supporting device and a foldable display device, which can solve the problem of poor display effect of the display device caused by creases in the related art. The technical solution is as follows:

[0006] On the one hand, a supporting device is provided, which is used to connect with a flexible display module to support the flexible display module. The flexible display module has a bending portion and a first non-bending portion and a second non-bending portion located at two sides of the bending portion. The supporting device includes a first supporting plate, a second supporting plate and a hinge. The first supporting plate is used to support the first non-bending portion. The second supporting plate is used to support the second non-bending portion. The hinge is used to fold or unfold the bending portion. The hinge at least includes a rotating assembly, which includes:

[0007] a first turnover plate fixedly connected with the first supporting plate;

[0008] a fixing member rotationally connected with the first turnover plate;

[0009] a connecting cover member covering the fixing member and fixedly connected with the fixing member;

[0010] a sliding piece, which is covered by the connecting cover and is in sliding connection with the fixing piece;

[0011] a first elastic piece, which is located between the fixing piece and the sliding piece, one end of the first elastic piece being connected with the fixing piece and the other end being connected with the sliding piece;

[0012] a second turnover plate, which is fixedly connected with the second support plate and is in rotary connection with the sliding piece;

[0013] wherein the first elastic piece is in a compressed state, a first compression amount of the first elastic piece when the support device is not connected with the flexible display module being smaller than a second compression amount of the first elastic piece when the support device is connected with the flexible display module.

[0014] Optionally, when the support device is not connected with the flexible display module, the sliding piece is in abutment with the inner wall of the connecting cover under the elastic force of the first elastic piece.

[0015] When the support device is connected with the flexible display module, the sliding piece and the inner wall of the connecting cover have a gap.

[0016] Optionally, when the support device is not connected with the flexible display module and the support device is in a flat state, the first turnover plate and the second turnover plate have a first gap therebetween.

[0017] When the support device is connected with the flexible display module and the support device is in a flat state, the first turnover plate and the second turnover plate have a second gap therebetween.

[0018] wherein the first gap is larger than the second gap, and the difference between the first gap and the second gap is a length compensation value of the flexible display module.

[0019] Optionally, the fixing piece has a first arc-shaped rotary groove, the first turnover plate has a first rotary structure, the first rotary structure is located in the first arc-shaped rotary groove and can rotate in the first arc-shaped rotary groove.

[0020] The sliding piece has a second arc-shaped rotary groove, the second turnover plate has a second rotary structure, the second rotary structure is located in the second arc-shaped rotary groove and can rotate in the second arc-shaped rotary groove.

[0021] Optionally, the fixing piece has a first fixed branch and a second fixed branch which are oppositely arranged and have a spacing, and the first arc-shaped rotary groove is arranged on the first fixed branch.

[0022] The first fixed branch is close to one side of the second fixed branch, and the second fixed branch is close to one side of the first fixed branch, and both sides have slide rails;

[0023] Both sides of the sliding member have slide rail grooves matched with the slide rails, the sliding member is located between the first fixed branch and the second fixed branch, and the slide rails of the first fixed branch and the second fixed branch are located in the slide rail grooves and can slide in the slide rail grooves.

[0024] Optionally, the fixing member further comprises a fixed connection branch, the length direction of the fixed connection branch intersects with the length direction of the first fixed branch and the length direction of the second fixed branch, one end of the fixed connection branch is connected with the first fixed branch, and the other end is connected with the second fixed branch, and the middle part of the fixed connection branch has a first connecting shaft, and one end of the first elastic member is sleeved on the first connecting shaft and connected with the fixed connection branch.

[0025] The sliding member has an opening area, and the middle part of the side of the opening area of the sliding member away from the fixing member has a second connecting shaft, the first elastic member is located in the opening area, and the other end of the first elastic member is sleeved on the second connecting shaft.

[0026] Optionally, the second arc-shaped rotating groove comprises a first arc-shaped sub-groove and a second arc-shaped sub-groove located on both sides of the second connecting shaft.

[0027] The second rotating structure has a first rotating sub-structure rotationally connected with the first arc-shaped sub-groove, and a second rotating sub-structure rotationally connected with the second arc-shaped sub-groove.

[0028] Optionally, the first rotating sub-structure and the second rotating sub-structure have a first clamping part close to one side of the connecting cover member.

[0029] The connecting cover member has a second clamping part for mutual cooperation with the first clamping part.

[0030] When the support device is in the unfolded state, there is a gap between the first clamping part and the second clamping part, and when the included angle between the first flip plate and the second flip plate is less than the included angle threshold, the first clamping part and the second clamping part are in direct contact with each other.

[0031] Optionally, the support device further comprises a same-motion assembly, and the same-motion assembly comprises:

[0032] a first stop structure, a first gear structure connected with the first stop structure, a second gear structure, a third gear structure, and a fourth gear structure which are sequentially engaged.

[0033] The first gear structure is in sliding connection with the first turnover plate and in rotational connection with the fixing member and the first stop structure; the second gear structure is in rotational connection with the fixing member and the first stop structure; the third gear structure is in rotational connection with the fixing member and the first stop structure; and the fourth gear structure is in sliding connection with the second turnover plate and in rotational connection with the fixing member and the first stop structure.

[0034] The first gear structure has a first gear part, a first connecting rod, a first connecting part and a first rotating part; the first gear part is sleeved on the first connecting rod and fixedly connected with the first connecting rod; the first connecting part is located on the side of the first gear part with gear teeth and fixedly connected with the side of the first gear part; and the first rotating part is fixedly connected with the first connecting part.

[0035] The second gear structure has a second gear part and a second connecting rod; the second gear part is located on the side of the first gear part away from the first connecting part and engaged with the first gear part; the second gear part is sleeved on the second connecting rod and fixedly connected with the second connecting rod; and the side wall of the fixing member further has a second connecting slot, one end of the second connecting rod being in rotational connection with the second connecting slot.

[0036] The third gear structure has a third gear part and a third connecting rod; the third gear part is located on the side of the second gear part away from the first gear part and engaged with the second gear part; the third gear part is sleeved on the third connecting rod and fixedly connected with the third connecting rod; and the side wall of the fixing member further has a third connecting slot, one end of the third connecting rod being in rotational connection with the third connecting slot.

[0037] The fourth gear structure has a fourth gear part, a fourth connecting rod, a second connecting part and a second rotating part; the fourth gear part is located on the side of the third gear part away from the second gear part and engages with the third gear part; the fourth gear part is sleeved on the fourth connecting rod and fixedly connected with the fourth connecting rod; the second connecting part is located on the side of the fourth gear part with gear teeth and fixedly connected with the side of the fourth gear part; the second rotating part is fixedly connected with the second connecting part; the second turnover plate has a second sliding groove; the second rotating part is located in the second sliding groove and can slide in the second sliding groove; the side wall of the fixing part has a fourth connecting groove; one end of the fourth connecting rod is rotationally connected with the fourth connecting groove.

[0038] The first stop structure has a first through hole, a second through hole, a first blind hole and a second blind hole; the first blind hole and the second blind hole are located between the first through hole and the second through hole; the first through hole is used for allowing the other end of the first connecting rod to pass through; the second through hole is used for allowing the other end of the fourth connecting rod to pass through; the other end of the second connecting rod is located in the first blind hole; and the other end of the third connecting rod is located in the second blind hole.

[0039] Optionally, the hinge further comprises a torsion assembly; the torsion assembly comprises:

[0040] Two friction members; the two friction members are located on the side of the first stop structure away from the gear structures and each has a first connecting hole; the first connecting hole of one of the friction members is used for allowing the first connecting rod to pass through; and the first connecting hole of the other friction member is used for allowing the fourth connecting rod to pass through.

[0041] A concave-convex wheel connecting structure; the concave-convex wheel connecting structure comprises a first concave-convex part, a second concave-convex part and a concave-convex connecting part connecting the first concave-convex part and the second concave-convex part; the first concave-convex part and the second concave-convex part each have a second connecting hole; the second connecting hole of the first concave-convex part is used for allowing the first connecting rod to pass through; the second connecting hole of the second concave-convex part is used for allowing the fourth connecting rod to pass through; one side of the first concave-convex part and the second concave-convex part is a plane and the other side is a concave-convex surface; and the plane is closer to the friction member than the concave-convex surface.

[0042] Two concave-convex pieces, both of which are located on the side of the concave-convex wheel connecting structure away from the friction piece, and both of which have a third connecting hole, one side of each of the concave-convex pieces is a plane, and the other side is a concave-convex surface, the concave-convex surface of one of the concave-convex pieces and the concave-convex surface of the first concave-convex part are engaged with each other, and the third connecting hole of one of the concave-convex pieces is used for the first connecting rod to pass through, the concave-convex surface of the other of the concave-convex pieces and the concave-convex surface of the second concave-convex part are engaged with each other, and the third connecting hole of the other of the concave-convex pieces is used for the fourth connecting rod to pass through.

[0043] Two second elastic pieces, one end of one of the second elastic pieces is in contact with the plane of one of the concave-convex pieces, and is used for the first connecting rod to pass through, and one end of the other of the second elastic pieces is in contact with the plane of the other of the concave-convex pieces, and is used for the fourth connecting rod to pass through.

[0044] A second stop structure, which is located on the side of the two second elastic pieces away from the same-motion assembly, and is fixedly connected with the connecting cover piece; one end of the second stop structure is in contact with the other end of one of the second elastic pieces, and the other end is in contact with the other end of the other of the second elastic pieces.

[0045] Optionally, the first connecting rod and the second connecting rod have at least one flat-bit structure in a cross section; the first connecting hole and the third connecting hole are flat-bit connecting holes matched with the at least one flat-bit structure; the friction piece and the concave-convex piece can rotate synchronously with the first connecting rod and the fourth connecting rod.

[0046] The first connecting rod and the fourth connecting rod can rotate in the second connecting hole, and the concave-convex wheel connecting structure and the first connecting rod and the fourth connecting rod are non-synchronous.

[0047] Optionally, the second elastic piece is a square spring, which refers to a spring with a square cross section.

[0048] Optionally, the rotating assembly includes two first flip plates, two fixed pieces, one connecting cover piece, two sliding pieces, two first elastic pieces, and two second flip plates.

[0049] In another aspect, a folding display device is provided, which includes a flexible display module and a support device as described in the above aspect;

[0050] The support device is located on the non-display surface of the flexible display module, and is connected with the flexible display module to support the flexible display module.

[0051] The technical scheme provided by the present application has at least the following beneficial effects:

[0052] The application provides a supporting device and a folding display device. The first supporting plate and the second supporting plate in the supporting device are used for supporting the non-bending part of the flexible display module, and the hinge is used for folding or flattening the bending part of the flexible display module. When the supporting device drives the flexible display module to be in the flattened state, the sliding piece has a tendency to slide away from the fixed piece under the elastic force of the first elastic piece, so that the flexible display module can be kept flat under the elastic force. After the folding display device is used for a period of time, if the length of the flexible display module in the flattened state and the length of the flexible display module in the folded state are slightly different, the second compression amount of the first elastic piece can gradually change to the first compression amount, so as to compensate for the length change of the flexible display module. Thus, the length of the hinge can be matched with the length of the flexible display module, so that the flexible display module can be kept in the flat state, and the display effect of the folding display device is better. BRIEF DESCRIPTION OF DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0054] Figure 1 is a structural schematic diagram of a flexible display module provided by an embodiment of the present application;

[0055] Figure 2 is a structural schematic diagram of a supporting device provided by an embodiment of the present application;

[0056] Figure 3 is Figure 2 is a structural schematic diagram of a hinge in the supporting device shown in FIG. 8;

[0057] Figure 4 is a partial structural schematic diagram of the hinge in the supporting device shown in FIG. 8; Figure 2

[0058] is an exploded schematic diagram of a rotating assembly provided by an embodiment of the present application; Figure 5

[0059] is a schematic diagram of a supporting device provided by an embodiment of the present application in a flattened state; Figure 6

[0060] is a schematic diagram of a supporting device and a flexible display module provided by an embodiment of the present application in a flattened state; Figure 7

[0061] Figure 8 ​Figure 1 is a structural schematic diagram of a fixing member provided by an embodiment of the present application;

[0062] Figure 9 Figure 2 is a structural schematic diagram of a first turnover plate provided by an embodiment of the present application;

[0063] Figure 10 Figure 3 is a structural schematic diagram of a sliding member provided by an embodiment of the present application;

[0064] Figure 11 Figure 4 is a structural schematic diagram of a second turnover plate provided by an embodiment of the present application;

[0065] Figure 12 Figure 5 is a schematic diagram of cooperation between a fixing member and a sliding member provided by an embodiment of the present application;

[0066] Figure 13 Figure 6 is a structural schematic diagram of a connecting cover member provided by an embodiment of the present application;

[0067] Figure 14 Figure 7 is a schematic diagram of a support device in a flat state provided by an embodiment of the present application;

[0068] Figure 15 Figure 8 is a schematic diagram of a support device in a folded state provided by an embodiment of the present application;

[0069] Figure 16 Figure 9 is a connection relationship diagram of a fixing member and a connecting cover member provided by an embodiment of the present application;

[0070] Figure 17 Figure 10 is a schematic diagram of a rotating assembly and a same-motion assembly provided by an embodiment of the present application;

[0071] Figure 18 Figure 11 is a schematic diagram of another rotating assembly and same-motion assembly provided by an embodiment of the present application;

[0072] Figure 19 Figure 12 is a structural schematic diagram of a first gear structure provided by an embodiment of the present application;

[0073] Figure 20 Figure 13 is a structural schematic diagram of a first stop structure provided by an embodiment of the present application;

[0074] Figure 21 Figure 14 is an exploded schematic diagram of a same-motion assembly and a torsion assembly provided by an embodiment of the present application;

[0075] Figure 22 Figure 15 is a schematic diagram of a same-motion assembly and a torsion assembly provided by an embodiment of the present application;

[0076] Figure 23 Figure 16 is a structural schematic diagram of a friction member provided by an embodiment of the present application;

[0077] Figure 24 is a structural schematic diagram of a concave-convex wheel connecting structure provided by an embodiment of the present application;

[0078] Figure 25 is a structural schematic diagram of a concave-convex part provided by an embodiment of the present application;

[0079] Figure 26 is a structural schematic diagram of a second stop structure provided by an embodiment of the present application;

[0080] Figure 27 is a sectional schematic diagram of a first connecting rod or a fourth connecting rod provided by an embodiment of the present application;

[0081] Figure 28 is a sectional schematic diagram of a friction part provided by an embodiment of the present application;

[0082] Figure 29 is an explosion schematic diagram of a folding display device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0083] To make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0084] An embodiment of the present application provides a support device 10, which can be used to be connected with a flexible display module 20 to support the flexible display module 20. Referring to Figure 1 , the flexible display module 20 has a bending part 20a and a first non-bending part 20b and a second non-bending part 20c located on two sides of the bending part 20a. Figure 2 is a structural schematic diagram of a support device provided by an embodiment of the present application. Referring to Figure 2 , the support device 10 includes a first support plate 101, a second support plate 102 and a hinge 103. The first support plate 101 is used to support the first non-bending part 20b, and the second support plate 102 is used to support the second non-bending part 20c.

[0085] Figure 3 is a structural schematic diagram of the hinge in the support device shown in Figure 2 . Figure 4 is a partial structural schematic diagram of the hinge in the support device shown in Figure 2 . Referring to Figure 3 and Figure 4 , the hinge 103 at least includes a rotating assembly 1031. Figure 5 is an explosion schematic diagram of a rotating assembly provided by an embodiment of the present application. In combination with Figure 4 to Figure 5The rotating assembly 1031 comprises a first turnover plate 10311, a fixing member 10312, a connecting cover member 10313, a sliding member 10314, a first elastic member 10315, and a second turnover plate 10316.

[0086] The reference Figure 2 to Figure 5 The first turnover plate 10311 is fixedly connected with the first support plate 101, so that the first turnover plate 10311 drives the first support plate 101 to rotate synchronously. The fixing member 10312 is rotationally connected with the first turnover plate 10311, i.e., the first turnover plate 10311 can rotate relative to the fixing member 10312. The connecting cover member 10313 covers the fixing member 10312 and the sliding member 10314, and the connecting cover member 10313 is fixedly connected with the fixing member 10312, and the sliding member 10314 is slidingly connected with the fixing member 10312. One end of the first elastic member 10315 is connected with the fixing member 10312, and the other end is connected with the sliding member 10314. The second turnover plate 10316 is fixedly connected with the second support plate 102, and is rotationally connected with the sliding member 10314.

[0087] Since the first turnover plate 10311 can drive the first support plate 101 to rotate, and the second turnover plate 10316 can drive the second support plate 102 to rotate, when the first turnover plate 10311 rotates relative to the fixing member 10312, and the second turnover plate 10316 rotates relative to the sliding member 10314, the first support plate 101 and the second support plate 102 can rotate relative to each other, so that the folding or unfolding of the support device 10 is realized. Further, the folding or unfolding of the folding display device composed of the support device 10 and the flexible display module 20 can be realized. For example, when the support device 10 changes from the unfolded state to the folded state, the flexible display module 20 can be driven to change from the unfolded state to the folded state (i.e., the folding display device is folded); when the support device 10 changes from the folded state to the unfolded state, the flexible display module 20 can be driven to change from the folded state to the unfolded state (i.e., the folding display device is unfolded).

[0088] In the embodiment of the present application, since the fixing member 10312 and the sliding member 10314 are covered by the connecting cover member 10313, when the sliding member 10314 slides relative to the fixing member 10312, the entire sliding process is limited within the space of the connecting cover member 10313. Further, the first elastic member 10315 is in a compressed state, and the first elastic member 10315 is connected with the fixing member 10312 and the sliding member 10314 respectively, so that the sliding member 10314 can slide relative to the fixing member 10312 under the elastic force of the first elastic member 10315.

[0089] Optionally, the elastic force of the first elastic member 10315 is positively correlated with the compression amount of the first elastic member 10315. The length of the first elastic member 10315 is negatively correlated with the compression amount of the first elastic member 10315. That is, the greater the compression amount of the first elastic member 10315, the greater the elastic force of the first elastic member 10315, and the smaller the length of the first elastic member 10315; the smaller the compression amount of the first elastic member 10315, the smaller the elastic force of the first elastic member 10315, and the greater the length of the first elastic member 10315.

[0090] When the support device 10 drives the flexible display module 20 to be in the unfolded state, the sliding member 10314 can have a tendency to slide away from the fixed member 10312 under the elastic force of the first elastic member 10315, thereby enabling the second turning plate 10316 connected with the sliding member 10314 to provide an away-from-the-first-support-plate 101 force to the second support plate 102, and enabling the first turning plate 10311 connected with the fixed member 10312 to provide an away-from-the-second-support-plate 102 force to the first support plate 101. Moreover, since the first support plate 101 and the second support plate 102 are respectively connected with the first non-bending portion 20b and the second non-bending portion 20c of the flexible display module 20, the first support plate 101 can provide an away-from-the-second-non-bending-portion 20c force to the first non-bending portion 20b, and the second support plate 102 can provide an away-from-the-first-non-bending-portion 20b force to the second non-bending portion 20c. Thus, under the joint action of the first support plate 101 and the second support plate 102, the flexible display module 20 can be kept flat.

[0091] In the embodiments of the present application, the first compression amount of the first elastic member 10315 when the support device 10 is not connected with the flexible display module 20 is less than the second compression amount of the first elastic member 10315 when the support device 10 is connected with the flexible display module 20. That is, when the support device 10 is connected with the flexible display module 20, the length of the first elastic member 10315 between the sliding member 10314 and the fixed member 10312 is smaller, and the first elastic member 10315 can have a certain elongation allowance to match the length change of the flexible display module 20.

[0092] After the foldable display device is used for a period of time, if there is a slight difference in the length of the flexible display module 20 between the unfolded state and the folded state, the second compression amount of the first elastic member 10315 can be reduced (i.e., the first elastic member 10315 is elongated), thereby compensating for the length change of the flexible display module 20. That is, in the embodiments of the present application, the second compression amount of the first elastic member 10315 can change based on the length of the flexible display module 20, so that the length of the hinge 103 matches the length of the flexible display module 20, thereby ensuring that the flexible display module 20 remains in a flat state and has a better display effect.

[0093] Wherein, since the sliding member 10314 and the fixed member 10312 are covered in the connecting cover member, the maximum sliding distance of the sliding member 10314 relative to the fixed member 10312 is limited, and the maximum length of the first elastic member 10315 between the sliding member 10314 and the fixed member 10312 is also limited. Alternatively, when the second compression amount is reduced to the first compression amount, the sliding distance of the sliding member 10314 relative to the fixed member 10312 is maximum. In this case, the length of the first elastic member 10315 is the longest, and the length compensation provided by the flexible display module 20 is the largest.

[0094] In summary, the embodiment of the present application provides a support device, the first support plate and the second support plate in the support device are used to support the non-bending part of the flexible display module, and the hinge is used to fold or flatten the bending part of the flexible display module. When the support device drives the flexible display module to be in the flattened state, the sliding member has a tendency to slide away from the fixed member under the elastic force of the first elastic member, and thus the flexible display module can be kept flat under the elastic force. After the folding display device is used for a period of time, if there is a slight difference in the length of the flexible display module in the flattened and folded two different states, the second compression amount of the first elastic member can gradually change to the first compression amount to compensate for the length change of the flexible display module. Thus, the length of the hinge can be matched with the length of the flexible display module, and thus the flexible display module can be kept in a flat state, and the display effect of the folding display device is better.

[0095] Alternatively, the first elastic member 10315 can be a spring, for example, a square spring. The square spring refers to a spring with a square cross section. Wherein, the reason why the first elastic member 10315 adopts a square spring is that, in the same space, the cross-sectional area of the square spring is larger than that of a circular spring, and can provide greater elastic force.

[0096] In the embodiment of the present application, if the support device 10 is not connected with the flexible display module 20, the sliding member 10314 will slide away from the fixed member 10312 under the elastic force of the first elastic member 10315, and thus the distance between the sliding member 10314 and the fixed member 10312 can be the maximum allowed distance. Wherein, the sliding member 10314 and the fixed member 10312 are both located in the connecting cover member 10313, and thus the sliding member 10314 can only slide in the space of the connecting cover member 10313. Thus, the sliding member 10314 can abut against the inner wall of the connecting cover member 10313 under the elastic force of the first elastic member 10315. Wherein, referring to Figure 6If the support device 10 is not connected with the flexible display module 20 and the support device 10 is in the unfolded state, the first flip plate 10311 and the second flip plate 10316 have a first gap d1.

[0097] During the process of connecting the support device 10 and the flexible display module 20, the first support plate 101 and the second support plate 102 can be extruded by an auxiliary jig to the direction of approaching the hinge 103 (i.e., the distance between the first support plate 101 and the second support plate 102 is reduced), so that the length of the first elastic member 10315 is reduced (i.e., the compression amount of the first elastic member 10315 is changed from the first compression amount to the second compression amount). In addition, the support device 10 and the flexible display module 20 are connected during the extrusion of the auxiliary jig. Thus, the second compression amount of the first elastic member 10315 after the support device 10 and the flexible display module 20 are connected is greater than the first compression amount of the first elastic member 10315 when the support device 10 is not connected with the flexible display module 20.

[0098] Further, since the length of the first elastic member 10315 when the first elastic member 10315 is in the second compression amount is less than the length of the first elastic member 10315 when the first elastic member 10315 is in the first compression amount, the sliding member 10314 and the inner wall of the connecting cover 10313 have a gap after the support device 10 and the flexible display module 20 are connected. Wherein, referring to Figure 7 When the support device 10 is in the unfolded state, the first flip plate 10311 and the second flip plate 10316 have a second gap d2.

[0099] In the embodiments of the present application, the first gap d1 is greater than the second gap d2, and the difference between the first gap d1 and the second gap d2 is the length compensation value of the flexible display module 20. Optionally, the first gap d1 can range from 0.4 mm (millimeter) to 0.6 mm, for example, 0.43 mm, 0.45 mm, 0.48 mm, 0.5 mm, 0.53 mm, 0.55 mm, and 0.58 mm. The second gap d2 can be 0.15 mm to 0.25 mm, for example, 0.18 mm, 0.2 mm, and 0.23 mm. The length compensation value of the flexible display module 20 can be equal to the first gap d1 minus the second gap d2, i.e., the length compensation value of the flexible display module 20 ranges from 0.2 mm to 0.4 mm. For example, when the first gap d1 is 0.5 mm and the second gap d2 is 0.2 mm, the length compensation value of the flexible display module 20 is 0.5-0.2=0.3 mm.

[0100] Figure 8 is a structural schematic diagram of a fixing member provided by an embodiment of the present application. Figure 9 is a structural schematic diagram of a first flip plate provided by an embodiment of the present application. Combined with Figure 8 andFigure 9 The fixing member 10312 has a first arc-shaped rotating groove 10312a, and the first turnover plate 10311 has a first rotating structure 10311a located in the first arc-shaped rotating groove 10312a and capable of rotating in the first arc-shaped rotating groove 10312a. That is, the first turnover plate 10311 and the fixing member 10312 are relatively rotatable by rotating the first rotating structure 10311a in the first arc-shaped rotating groove 10312a.

[0101] Figure 10 FIG. 3 is a structural schematic diagram of a sliding member provided by an embodiment of the present application. Figure 11 FIG. 4 is a structural schematic diagram of a second turnover plate provided by an embodiment of the present application. FIG. 4 is combined with FIG. 3. Figure 10 and Figure 11 The sliding member 10314 has a second arc-shaped rotating groove 10314a, and the second turnover plate 10316 has a second rotating structure 10316a located in the second arc-shaped rotating groove 10314a and capable of rotating in the second arc-shaped rotating groove 10314a. That is, the second turnover plate 10316 and the sliding member 10314 are relatively rotatable by rotating the second rotating structure 10316a in the second arc-shaped rotating groove 10314a.

[0102] Referring to FIG. 3, Figure 8 The fixing member 10312 has a first fixed branch a1 and a second fixed branch a2 oppositely arranged and having a space, and the first arc-shaped rotating groove 10312a is arranged on the first fixed branch a1. The side of the first fixed branch a1 close to the second fixed branch a2 and the side of the second fixed branch a2 close to the first fixed branch a1 each have a slide rail G. Figure 10 The two sides of the sliding member 10314 have slide rail grooves C matched with the slide rails G.

[0103] Figure 12 FIG. 6 is a schematic diagram of the cooperation between a fixing member and a sliding member provided by an embodiment of the present application. Referring to FIG. 6, Figure 8 , Figure 10 and Figure 12 The sliding member 10314 is located between the first fixed branch a1 and the second fixed branch a2, and the slide rails G of the first fixed branch a1 and the second fixed branch a2 are respectively located in the slide rail grooves C of the two sides of the sliding member 10314 and capable of sliding in the slide rail grooves C. That is, the sliding member 10314 and the fixing member 10312 are relatively slidable by sliding the slide rails G in the slide rail grooves C.

[0104] Optionally, the slide rail G and the slide rail groove C designed in the fixing member 10312 and the sliding member 10314 can be interchanged. For example, the slide rail groove C can be designed on the side of the first fixed branch a1 close to the second fixed branch a2 and the side of the second fixed branch a2 close to the first fixed branch a1. The slide rail G matched with the slide rail groove C is designed on the two sides of the sliding member 10314.

[0105] Reference Figure 8 It can also be seen that the fixing member 10312 further comprises a fixed connecting branch a3. The length direction of the fixed connecting branch a3 intersects with the length directions of the first fixed branch a1 and the second fixed branch a2. One end of the fixed connecting branch a3 is connected with the first fixed branch a1 and the other end is connected with the second fixed branch a2. The middle part of the fixed connecting branch a3 is provided with a first connecting shaft 10312b, and one end of the first elastic member 10315 is sleeved on the first connecting shaft 10312b and connected with the fixed connecting branch a3.

[0106] Reference Figure 10 The sliding member 10314 has an opening area M, and the middle part of the side of the opening area M of the sliding member 10314 away from the fixing member 10312 is provided with a second connecting shaft 10314b. The first elastic member 10315 is located in the opening area M, and the other end of the first elastic member 10315 is sleeved on the second connecting shaft 10314b.

[0107] That is, by designing the first connecting shaft 10312b on the fixed connecting branch a3 of the fixing member 10312 and the second connecting shaft 10314b on the opening area M of the sliding member 10314, the connection of the first elastic member 10315 with the fixing member 10312 and the sliding member 10314 is realized.

[0108] Reference Figure 10 The second arc-shaped rotating groove 10314a comprises a first arc-shaped sub-groove 10314a1 and a second arc-shaped sub-groove 10314a2 located on the two sides of the second connecting shaft 10314b. Correspondingly, Figure 11 The second rotating structure 10316a has a first rotating sub-structure 10316a1 rotationally connected with the first arc-shaped sub-groove 10314a1 and a second rotating sub-structure 10316a2 rotationally connected with the second arc-shaped sub-groove 10314a2. The first arc-shaped sub-groove 10314a1 and the second arc-shaped sub-groove 10314a2 are both located in the opening area M.

[0109] Reference Figure 11 It can be seen that the first rotating sub-structure 10316a1 and the second rotating sub-structure 10316a2 of the first turnover plate 10311 have a first clamping part b1 close to the side of the connecting cover member 10313. Figure 13is a structural schematic diagram of a connecting cover provided by an embodiment of the present application. Refer to Figure 13 The connecting cover 10313 has a second clamping portion b2 for cooperating with the first clamping portion b1.

[0110] Figure 14 is a schematic diagram of a support device in a flattened state provided by an embodiment of the present application. Refer to Figure 14 The first clamping portion b1 and the second clamping portion b2 have a gap r therebetween. The existence of the gap r can make the first elastic member 10315 have the possibility of elongation, and in turn can make the gap between the first flip plate 10311 and the second flip plate 10316 be able to increase, i.e., can provide length compensation for the flexible display module 20.

[0111] Optionally, the gap r between the first clamping portion b1 and the second clamping portion b2 ranges from 0.3 mm to 0.5 mm, for example, 0.32 mm, 0.35 mm, 0.38 mm, 0.4 mm, 0.43 mm, 0.45 mm, and 0.48 mm. Assuming that the gap r between the first clamping portion b1 and the second clamping portion b2 is 0.3 mm, the support device 10 can provide 0.3 mm of length compensation for the flexible display module 20.

[0112] In addition, when the included angle between the first flip plate 10311 and the second flip plate 10316 is less than the included angle threshold, the first clamping portion b1 and the second clamping portion b2 cooperate with each other and directly contact. In the case where the first clamping portion b1 and the second clamping portion b2 directly contact, the second clamping portion b2 in the connecting cover 10313 can press the first clamping portion b1 in the rotating substructure, and in turn make the second flip plate 10316 move in the direction of approaching the first flip plate 10311. Thus, the support device 10 can not pull the flexible display module 20 during the folding process of the folding display device. That is, the support device 10 can only provide tension to the flexible display module 20 in the flattened state to eliminate the creases.

[0113] Figure 15 is a schematic diagram of a support device in a folded state provided by an embodiment of the present application. Refer to Figure 15 When the support device 10 is in the folded state (the included angle is less than the included angle threshold), the first clamping portion b1 and the second clamping portion b2 directly contact. Figure 15 In the figure, the contact positions of the first clamping portion b1 and the second clamping portion b2 are n.

[0114] Optionally, the included angle threshold value can be 170°. When the included angle between the first flip plate 10311 and the second flip plate 10316 is 170°, the gap between the first clamping part b1 and the second clamping part b2 is reduced to 0. When the included angle between the first flip plate 10311 and the second flip plate 10316 is less than 170°, the gap between the first clamping part b1 and the second clamping part b2 remains 0.

[0115] When the included angle between the first flip plate 10311 and the second flip plate 10316 gradually transitions from 180° to 170° in the support device 10, the gap between the first clamping part b1 and the second clamping part b2 gradually reduces from the gap r (for example, 0.3 mm) to 0 gap. That is, when the included angle between the first flip plate 10311 and the second flip plate 10316 ranges from 170° to 180°, the gap between the first clamping part b1 and the second clamping part b2 gradually reduces as the included angle between the first flip plate 10311 and the second flip plate 10316 decreases.

[0116] In the embodiment of the present application, the fixing member 10312 and the connecting cover member 10313 can be connected by screws. Referring to Figure 16 , the fixing member 10312 has two first connecting structures 10312c, and the connecting cover member 10313 has two second connecting structures 10313a correspondingly. Optionally, the first connecting structure 10312c and the second connecting structure 10313a can be connecting holes.

[0117] In addition, the first flip plate 10311 has a first connecting through hole 10311c, and the second flip plate 10316 has a second connecting through hole 10316c. One screw passes through the first connecting through hole 10311c to connect one of the first connecting structures 10312c and the corresponding one of the second connecting structures 10313a, and the other screw passes through the second connecting through hole 10316c to connect the other of the first connecting structures 10312c and the corresponding other of the second connecting structures 10313a. That is, the first connecting through hole 10311c on the first flip plate 10311 and the second connecting through hole 10316c on the second flip plate 10316 are holes for the screws to pass through, and do not connect the flip plate and the fixing member 10312.

[0118] In the embodiment of the present application, referring to Figure 3 and Figure 4 , the support device 10 further comprises a same-motion assembly 1032. Figure 17 is a schematic view of a rotating assembly and a same-motion assembly provided in the embodiment of the present application. Figure 18 is another schematic view of a rotating assembly and a same-motion assembly provided in the embodiment of the present application. Referring to Figure 17 andFigure 18 The same-motion assembly 1032 comprises a first stop structure 10321, and a first gear structure 10322, a second gear structure 10323, a third gear structure 10324 and a fourth gear structure 10325 connected with the first stop structure 10321 in sequence.

[0119] The first gear structure 10322 is slidingly connected with the first turnover plate 10311, and is rotatably connected with the fixing member 10312 and the first stop structure 10321. The second gear structure 10323 is rotatably connected with the fixing member 10312 and the first stop structure 10321. The third gear structure 10324 is rotatably connected with the fixing member 10312 and the first stop structure 10321. The fourth gear structure 10325 is slidingly connected with the second turnover plate 10316, and is connected with the fixing member 10312 and the first stop structure 10321.

[0120] Since the first gear structure 10322 is slidingly connected with the first turnover plate 10311, and the fourth gear structure 10325 is slidingly connected with the second turnover plate 10316, when the first turnover plate 10311 and the second turnover plate 10316 rotate relative to each other, the first gear structure 10322 and the fourth gear structure 10325 in the same-motion assembly 1032 can rotate synchronously, and then the second gear structure 10323 and the third gear structure 10324 meshing with the first gear structure 10322 and the fourth gear structure 10325 also rotate synchronously. Thus, the same-motion assembly 1032 and the rotating assembly 1031 can rotate synchronously, so that the supporting device 10 can be bent.

[0121] Figure 19 is a structural schematic view of a first gear structure provided by the embodiment of the present application. Referring to Figure 19 The first gear structure 10322 has a first gear part c1, a first connecting rod c2, a first connecting part c3 and a first rotating part c4. The first gear part c1 is sleeved on the first connecting rod c2, and is fixedly connected with the first connecting rod c2. The first connecting part c3 is located on the side of the first gear part c1 having gear teeth, and is fixedly connected with the side of the first gear part c1. The first rotating part c4 is fixedly connected with the first connecting part c3.

[0122] Combined with Figure 17 and Figure 19 The first turnover plate 10311 has a first sliding groove 10311b, and the first rotating part c4 is located in the first sliding groove 10311b and can slide in the first sliding groove 10311b. The side wall of the fixing member 10312 has a first connecting groove f1, and one end of the first connecting rod c2 is rotatably connected with the first connecting groove f1.

[0123] The second gear structure 10323 has a second gear part and a second connecting rod. The second gear part is located on the side of the first gear part c1 away from the first connecting part c3, and engages with the first gear part c1. The second gear part is sleeved on the second connecting rod, and is fixedly connected with the second connecting rod. The side wall of the fixing piece 10312 further has a second connecting groove f2, and one end of the second connecting rod is rotatably connected with the second connecting groove f2.

[0124] The third gear structure 10324 has a third gear part and a third connecting rod. The third gear part is located on the side of the second gear part away from the first gear part c1, and engages with the second gear part. The third gear part is sleeved on the third connecting rod, and is fixedly connected with the third connecting rod. The side wall of the fixing piece 10312 further has a third connecting groove f3, and one end of the third connecting rod is rotatably connected with the third connecting groove f3.

[0125] The fourth gear structure 10325 can have a similar design as the first gear structure 10322, and the present embodiment will not use a separate drawing to illustrate. The fourth gear structure 10325 has a fourth gear part, a fourth connecting rod, a second connecting part, and a second rotating part. The fourth gear part is located on the side of the third gear part away from the second gear part, and engages with the third gear part. The fourth gear part is sleeved on the fourth connecting rod, and is fixedly connected with the fourth connecting rod. The second connecting part is located on the side of the fourth gear part having teeth, and is fixedly connected with the side of the fourth gear part. The second rotating part is fixedly connected with the second connecting part. The second flipping plate 10316 has a second sliding groove 10316b, and the second rotating part is located in the second sliding groove 10316b and can slide in the second sliding groove 10316b. The side wall of the fixing piece 10312 has a fourth connecting groove f4, and one end of the fourth connecting rod is rotatably connected with the fourth connecting groove f4.

[0126] Reference Figure 20 The first stop structure 10321 has a first through hole g1, a second through hole g2, a first blind hole g3, and a second blind hole g4. The first blind hole g3 and the second blind hole g4 are located between the first through hole g1 and the second through hole g2. The first through hole g1 is used for the other end of the first connecting rod c2 to pass through, and the second through hole g2 is used for the other end of the fourth connecting rod to pass through. The other end of the second connecting rod is located in the first blind hole g3, and the other end of the third connecting rod is located in the second blind hole g4.

[0127] In the present embodiment, reference Figure 3 And Figure 4 The hinge 103 further includes a torsion assembly 1033. Figure 21 is an exploded schematic view of a same-motion assembly and a torsion assembly provided in the present embodiment. Reference Figure 21The torsion assembly 1033 comprises two friction members 10331, a concave-convex wheel connecting structure 10332, two concave-convex members 10333, two second elastic members 10334, and a second stop structure 10335.

[0128] Figure 22 FIG. 1 is a schematic diagram of a same-motion assembly and a torsion assembly according to an embodiment of the present application. The same-motion assembly and the torsion assembly are combined to form a same-motion torsion assembly. Figure 21 and Figure 22 The two friction members 10331 are located on the side of the first stop structure 10321 away from the gear structure.

[0129] Figure 23 FIG. 3 is a structural schematic diagram of a friction member according to an embodiment of the present application. Referring to FIG. 3, Figure 23 The friction member 10331 has a first connecting hole 10331a. The first connecting hole 10331a of one of the friction members 10331 is used for the first connecting rod c2 to pass through, and the first connecting hole 10331a of the other friction member 10331 is used for the fourth connecting rod to pass through. Thus, one side of the friction member 10331 and one side of the first stop structure 10321 are in contact.

[0130] Figure 24 FIG. 4 is a structural schematic diagram of a concave-convex wheel connecting structure according to an embodiment of the present application. Referring to FIG. 4, Figure 24 The concave-convex wheel connecting structure 10332 comprises a first concave-convex part e1, a second concave-convex part e2, and a concave-convex connecting part e3 connecting the first concave-convex part e1 and the second concave-convex part e2. The first concave-convex part e1 and the second concave-convex part e2 each have a second connecting hole 10332a. The second connecting hole 10332a of the first concave-convex part e1 is used for the first connecting rod c2 to pass through, and the second connecting hole 10332a of the second concave-convex part e2 is used for the fourth connecting rod to pass through. One side of the first concave-convex part e1 and the second concave-convex part e2 is a plane, and the other side is a concave-convex surface. The plane is closer to the friction member 10331 relative to the concave-convex surface. That is, the plane of the first concave-convex part e1 and the second concave-convex part e2 can be in contact with the other side of the friction member 10331.

[0131] Figure 25 FIG. 5 is a structural schematic diagram of a concave-convex member according to an embodiment of the present application. Referring to FIG. 5, Figure 22 and Figure 25The two convex-concave members 10333 are located on the side of the convex-concave wheel connecting structure 10332 away from the friction member 10331, and each has a third connecting hole 10333a. One side of each convex-concave member 10333 is a flat surface, and the other side is a convex-concave surface. The convex-concave surface of one of the convex-concave members 10333 engages with the convex-concave surface of the first convex-concave portion e1, and the third connecting hole 10333a of this convex-concave member is used for the first connecting rod c2 to pass through. The convex-concave surface of the other convex-concave member 10333 engages with the convex-concave surface of the second convex-concave portion e2, and the third connecting hole 10333a of this convex-concave member 10333 is used for the fourth connecting rod to pass through.

[0132] One end of one of the two second elastic members 10334 contacts the flat surface of one convex-concave member 10333 and is used for the first connecting rod c2 to pass through. One end of the other second elastic member 10334 contacts the flat surface of the other convex-concave member 10333 and is used for the fourth connecting rod to pass through. The second elastic member 10334 is used to provide a pressing force for the friction member 10331, the convex-concave wheel connecting structure 10332, and the convex-concave members 10333, so that the friction force generated by the pressing force realizes the stop-following function when the support device is opened and closed. The stop-following function can mean that the first support plate 101 and the second support plate 102 in the support device can be at any angle.

[0133] Figure 26 is a structural diagram of a second stop structure provided by an embodiment of the present application. Referring to Figure 22 and Figure 26 The second stop structure 10335 is located on the side of the two second elastic members 10334 away from the same-motion assembly 1032, and is fixedly connected with the connecting cover member 10313. For example, referring to Figure 13 and Figure 26 The second stop structure 10335 has a third connecting structure 10335a, and the connecting cover member 10313 has a fourth connecting structure 10313b. The third connecting structure 10335a and the fourth connecting structure 10313b are both connecting holes, and a screw passes through the third connecting structure 10335a and is connected with the fourth connecting structure 10313b. One end of the second stop structure 10335 contacts the other end of one second elastic member 10334, and the other end contacts the other end of the other second elastic member 10334.

[0134] Referring to Figure 21 The first connecting rod c2 and the fourth connecting rod have at least one flat position structure k in the cross section, for example, have two opposite flat position structures k. That is, the shape of the first connecting rod c2 and the fourth connecting rod in the cross section is non-circular. Referring to Figure 23 and Figure 26The first connecting hole 10331a and the third connecting hole 10333a are flat holes matched with the flat structure k. That is, the first connecting hole 10331a and the third connecting hole 10333a are non-circular holes.

[0135] Through the cooperation of the flat structure k and the flat connecting hole, the friction piece 10331 and the concave-convex piece 10333 can rotate synchronously with the first connecting rod c2 and the fourth connecting rod. That is, the friction piece can move in the axial direction of the connecting rod but cannot rotate relative to the connecting rod. Thus, the relative rotation of the friction piece relative to the first stop structure 10321 can provide partial torque. In addition, the concave-convex piece 10333 can move in the axial direction of the connecting rod but cannot rotate relative to the connecting rod. Thus, the relative rotation of the concave-convex piece 10333 relative to the concave-convex wheel connecting structure 10332 can also provide partial torque, and the sum of the torques of the friction piece 10331 and the concave-convex piece 10333 is the total friction torque.

[0136] In the embodiment of the present application, the first connecting rod c2 and the fourth connecting rod can also have a convex structure in the cross section. Correspondingly, the first connecting hole 10331a can be a convex connecting hole matched with the convex structure. Through the cooperation of the convex structure and the convex connecting hole, the friction piece 10331 can rotate synchronously with the first connecting rod c2 and the fourth connecting rod. The third connecting hole 10333a in the concave-convex piece 10333 can be similar to the first connecting hole 10331a, and the embodiment of the present application will not be described with reference to the drawings. Figure 27 Figure 28 In the embodiment of the present application, the first connecting rod c2 and the fourth connecting rod can also have a convex structure in the cross section. Correspondingly, the first connecting hole 10331a can be a convex connecting hole matched with the convex structure. Through the cooperation of the convex structure and the convex connecting hole, the friction piece 10331 can rotate synchronously with the first connecting rod c2 and the fourth connecting rod. The third connecting hole 10333a in the concave-convex piece 10333 can be similar to the first connecting hole 10331a, and the embodiment of the present application will not be described with reference to the drawings.

[0137] The specific shape of the first connecting rod c2, the fourth connecting rod, the first connecting hole 10331a, and the third connecting hole 10333a is not limited in the embodiment of the present application, as long as the friction piece 10331 and the concave-convex piece 10333 can rotate synchronously with the first connecting rod c2 and the fourth connecting rod.

[0138] In addition, the second connecting hole 10332a in the first concave-convex part e1 and the second concave-convex part e2 of the concave-convex wheel connecting structure 10332 can be a circular hole, and the first connecting rod c2 and the fourth connecting rod can rotate in the second connecting hole 10332a. That is, the concave-convex wheel connecting structure 10332 and the first connecting rod c2 and the fourth connecting rod do not rotate synchronously.

[0139] ​In the embodiment of the present application, when the first connecting rod c2 and the fourth connecting rod rotate, the friction element and the first stop structure 10321 have a torsion force, the friction element 10331 and the concave-convex wheel connecting structure 10332 have a torsion force, and the concave-convex element 10333 and the concave-convex wheel connecting structure 10332 have a torsion force. That is, the torsion force assembly 1033 of the support device 10 is designed with the friction element 10331, which can improve the total friction torsion force. The greater the total friction torsion force, the better the folding product can meet the stop function (the support device can stop at any angle). Moreover, the greater the total friction torsion force, the more convenient it is to solve the problem of small space occupied by the hinge but large torsion force required, which conforms to the development direction of the light and thin folding product.

[0140] Optionally, the second elastic element 10334 can be a spring, for example, a square spring, which refers to a spring with a square cross section. The reason for using a square spring for the second elastic element 10334 is that the cross-sectional area of the square spring is larger than that of a round spring under the same space, and the square spring can provide greater elastic force.

[0141] The greater the elastic force of the second elastic element 10334, the greater the friction force between the friction element 10331 and the concave-convex wheel connecting structure 10332 and between the concave-convex wheel connecting structure 10332 and the concave-convex element 10333 during the folding and unfolding of the support device 10. The greater the friction force, the greater the torsion force generated. Thus, it is convenient to solve the problem of small space occupied by the hinge but large torsion force required, which conforms to the development direction of the light and thin folding product.

[0142] In the embodiment of the present application, the first support plate 101 and the second support plate 102 are fixedly connected with the hinge 103 through screws. The flexible display module 20 is attached to the first support plate 101 and the second support plate 102 through double-sided adhesive. When the support device 10 drives the flexible display module 20 to be in the flat state (the included angle between the first support plate 101 and the second support plate 102 is 180°), the first elastic member 10315 can push the sliding member 10314 to slide, thereby increasing the distance between the first support plate 101 and the second support plate 102, and providing tension to eliminate the creases of the flexible display module 20. When the support device 10 drives the flexible display module 20 to transition from the flat state to the folded state (the included angle between the first support plate 101 and the second support plate 102 gradually transitions from 180° to 170°), the distance between the first support plate 101 and the second support plate 102 gradually decreases, thereby gradually reducing the tension. Until the included angle between the first support plate 101 and the second support plate 102 is 170°, the tension is reduced to zero. When the support device 10 drives the flexible display module 20 to be in the folded state (the included angle between the first support plate 101 and the second support plate 102 is less than 170°), the zero tension is maintained, that is, the first support plate 101 and the second support plate 102 do not provide tension to the flexible display module 20.

[0143] In summary, the embodiment of the present application provides a support device, the first support plate and the second support plate in the support device are used to support the non-bending part of the flexible display module, and the hinge is used to fold or flatten the bending part of the flexible display module. When the support device drives the flexible display module to be in the flat state, the sliding member has a tendency to slide away from the fixed member under the elastic force of the first elastic member, thereby the flexible display module can be kept flat under the elastic force. After the folding display device is used for a period of time, if there is a slight difference in the length of the flexible display module in the flat state and the folded state, the second compression amount of the first elastic member can gradually change to the first compression amount to compensate for the length change of the flexible display module. Thus, the length of the hinge can be matched with the length of the flexible display module, thereby ensuring that the flexible display module is kept in a flat state, and the display effect of the folding display device is better.

[0144] The embodiment of the present application also provides a folding display device, referring to Figure 27 The folding display device includes a flexible display module 20 and a support device 10 provided by the above-mentioned embodiment. The support device 10 is located on the non-display surface of the flexible display module 20 and is connected with the flexible display module 20. The support device 10 is used to support the flexible display module 20.

[0145] Optionally, the substrate in the flexible display module 20 can adopt ultra thin glass (UTG), thereby ensuring that the folding display device can develop in the direction of lightness and thinness.

[0146] In addition, the folding manner of the folding display device can be U-shaped folding, that is, the hinge in the support device 10 is a U-shaped folding hinge. Compared with the water drop-shaped folding hinge, the U-shaped folding hinge not only has a simpler hinge structure and a cost of about 50% of the water drop-shaped folding hinge, but also can also meet the folding requirement.

[0147] In the embodiments of the present application, in combination with Figure 2 , Figure 3 and Figure 27 , the rotating assembly 1031 included in the hinge 103 can include two first flip plates 10311, two fixed parts 10312, two sliding parts 10314, two first elastic parts 10315 and two second flip plates 10316. In addition, the rotating assembly 1031 includes a connecting cover part 10313. At the same time, the hinge 103 includes two same-motion assemblies 1032 and two torsion assemblies 1033.

[0148] Optionally, the two first flip plates 10311, the two fixed parts 10312, the two sliding parts 10314, the two first elastic parts 10315 and the two second flip plates 10316 included in the rotating assembly 1031, the two same-motion assemblies 1032 and the two torsion assemblies 1033 can share the same connecting cover part 10313.

[0149] Since the folding display device can have substantially the same technical effects as the support device described in the foregoing embodiments, for the purpose of brevity, the technical effects of the folding display device will not be described again here.

[0150] It will be understood that, although the terms first and second, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another region, layer or section. Therefore, a first element, component, region, layer or section discussed above can be called a second element, component, region, layer or section without departing from the teachings of the present disclosure.

[0151] Spatially relative terms such as "beneath", "below", "lower", "above", "upper" and the like can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device in the figures is inverted, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. It will also be understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or one or more intervening layers can also be present.

[0152] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising", when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. In the description, specific details are set forth in order to provide a thorough understanding of certain embodiments or examples. However, various embodiments or examples can be practiced without these specific details. In other instances, well-known methods, procedures, components and / or circuits have not been described in detail so as not to unnecessarily obscure aspects of the embodiments or examples.

[0153] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and / or the present disclosure and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0154] The above description is merely illustrative of the exemplary embodiments of this application and is not intended to limit the scope of the application. As such, modifications and variations of the embodiments disclosed herein can be made by those skilled in the art without departing from the spirit or the scope of the application.

Claims

1. A supporting device, characterized in that: The supporting device is used to connect with the flexible display module to support the flexible display module, and the flexible display module has a bending portion and a first non-bending portion and a second non-bending portion located on both sides of the bending portion; The support device includes: a first support plate, the first support plate is used to support the first non-bending portion; a second support plate, the second support plate is used to support the second non-bending portion; and a hinge, the hinge is used to fold or flatten the bending portion, the hinge includes at least a rotating component, and the rotating component includes: a first flip plate, wherein the first flip plate is fixedly connected to the first support plate; a fixing member, the fixing member being rotatably connected to the first flip plate, the fixing member having a first arcuate rotation groove, the first flip plate having a first rotation structure, the first rotation structure being located in the first arcuate rotation groove and being rotatable in the first arcuate rotation groove; a connecting covering member, the connecting covering member covering the fixing member and being fixedly connected to the fixing member; a sliding member, the sliding member being covered by the connecting and covering member and being slidably connected to the fixing member, the sliding member having a second arc-shaped rotation groove; a first elastic member, the first elastic member being located between the fixed member and the sliding member, with one end of the first elastic member being connected to the fixed member and the other end being connected to the sliding member; a second flip plate, the second flip plate being fixedly connected to the second support plate and being rotatably connected to the sliding member; the second flip plate having a second rotation structure, the second rotation structure being located in the second arc-shaped rotation groove and being rotatable in the second arc-shaped rotation groove; The first elastic member is in a compressed state, and a first compression amount of the first elastic member when the supporting device is not connected to the flexible display module is less than a second compression amount of the first elastic member after the supporting device is connected to the flexible display module.

2. The support device according to claim 1, characterized in that If the supporting device is not connected to the flexible display module, the sliding member abuts against the inner wall of the connecting covering member under the elastic force of the first elastic member; If the supporting device is connected to the flexible display module, a gap exists between the sliding member and the inner wall of the connecting covering member.

3. The supporting device according to claim 1, characterized in that The supporting device is not connected to the flexible display module, and when the supporting device is in a flattened state, a first gap exists between the first flip plate and the second flip plate; The supporting device is connected to the flexible display module, and when the supporting device is in a flattened state, a second gap is formed between the first flip plate and the second flip plate; The first gap is larger than the second gap, and a difference between the first gap and the second gap is a length compensation value of the flexible display module.

4. The support device according to claim 1, characterized in that The fixing member comprises a first fixing branch and a second fixing branch which are arranged opposite to each other and spaced apart from each other, and the first arc-shaped rotation groove is arranged on the first fixing branch; A side of the first fixing branch close to the second fixing branch, and a side of the second fixing branch close to the first fixing branch both have a sliding rail; Both sides of the sliding member have sliding rail grooves matching the sliding rails. The sliding member is located between the first fixed branch and the second fixed branch, and the sliding rails of the first fixed branch and the second fixed branch are both located in the sliding rail grooves and can slide in the sliding rail grooves.

5. The supporting device according to claim 4, characterized in that: The fixing member further includes: a fixed connecting branch, the length direction of which intersects with the length directions of the first fixing branch and the second fixing branch; one end of the fixed connecting branch is connected to the first fixing branch, and the other end is connected to the second fixing branch; a first connecting shaft is provided in the middle of the fixed connecting branch, and one end of the first elastic member is sleeved on the first connecting shaft and connected to the fixed connecting branch; The sliding member has an opening area, and a second connecting shaft is provided in the middle of the opening area of ​​the sliding member away from the fixing member. The first elastic member is located in the opening area, and the other end of the first elastic member is sleeved on the second connecting shaft.

6. The supporting device according to claim 5, characterized in that The second arc-shaped rotation groove includes a first arc-shaped sub-groove and a second arc-shaped sub-groove located on both sides of the second connecting shaft; The second rotating structure includes a first rotating substructure rotatably connected to the first arcuate sub-groove, and a second rotating substructure rotatably connected to the second arcuate sub-groove.

7. The supporting device according to claim 6, characterized in that The first rotating substructure and the second rotating substructure have a first clamping portion on one side close to the connecting covering member; The connecting covering member has a second clamping portion for cooperating with the first clamping portion; In which, when the supporting device is in a flattened state, there is a gap between the first clamping portion and the second clamping portion, and when the angle between the first flip plate and the second flip plate is less than the angle threshold, the first clamping portion and the second clamping portion cooperate with each other in direct contact.

8. The supporting device according to any one of claims 1 to 7, characterized in that: The supporting device further comprises: a synchronous component; the synchronous component comprises: a first stop structure, and a first gear structure, a second gear structure, a third gear structure, and a fourth gear structure connected to and meshing with the first stop structure in sequence; Among them, the first gear structure is slidably connected to the first flip plate, and is rotatably connected to the fixing member and the first stop structure; the second gear structure is rotatably connected to the fixing member and the first stop structure; the third gear structure is rotatably connected to the fixing member and the first stop structure; the fourth gear structure is slidably connected to the second flip plate, and is rotatably connected to the fixing member and the first stop structure.

9. The supporting device according to claim 8, characterized in that The first gear structure comprises a first gear portion, a first connecting rod, a first connecting portion, and a first rotating portion; the first gear portion is sleeved on the first connecting rod and fixedly connected to the first connecting rod, the first connecting portion is located on a side of the first gear portion having gear teeth and is fixedly connected to a side edge of the first gear portion, and the first rotating portion is fixedly connected to the first connecting portion; the first flip plate has a first sliding groove, the first rotating portion is located in the first sliding groove and can slide in the first sliding groove; the side wall of the fixing member has a first connecting groove, and one end of the first connecting rod is rotatably connected to the first connecting groove; The second gear structure comprises a second gear portion and a second connecting rod; the second gear portion is located on a side of the first gear portion away from the first connecting portion and meshes with the first gear portion; the second gear portion is sleeved on the second connecting rod and fixedly connected to the second connecting rod; the side wall of the fixing member further comprises a second connecting groove, and one end of the second connecting rod is rotatably connected to the second connecting groove; The third gear structure comprises a third gear portion and a third connecting rod; the third gear portion is located on a side of the second gear portion away from the first gear portion and meshes with the second gear portion; the third gear portion is sleeved on the third connecting rod and fixedly connected to the third connecting rod; the side wall of the fixing member further comprises a third connecting groove, and one end of the third connecting rod is rotatably connected to the third connecting groove; The fourth gear structure comprises a fourth gear portion, a fourth connecting rod, a second connecting portion, and a second rotating portion; the fourth gear portion is located on a side of the third gear portion away from the second gear portion, and meshes with the third gear portion; the fourth gear portion is sleeved on the fourth connecting rod and fixedly connected to the fourth connecting rod, the second connecting portion is located on a side having gear teeth in the fourth gear portion, and is fixedly connected to a side edge of the fourth gear portion, and the second rotating portion is fixedly connected to the second connecting portion; the second flip plate has a second sliding groove, the second rotating portion is located in the second sliding groove, and can slide in the second sliding groove; the side wall of the fixing member has a fourth connecting groove, and one end of the fourth connecting rod is rotatably connected to the fourth connecting groove; The first stop structure has a first through hole, a second through hole, a first blind hole and a second blind hole; the first blind hole and the second blind hole are located between the first through hole and the second through hole, the first through hole is used for the other end of the first connecting rod to pass through, the second through hole is used for the other end of the fourth connecting rod to pass through, the other end of the second connecting rod is located in the first blind hole, and the other end of the third connecting rod is located in the second blind hole.

10. The supporting device according to claim 9, characterized in that The hinge further comprises: a torsion assembly; the torsion assembly comprises: two friction members, both located on a side of the first stop structure away from the gear structures, and both having a first connecting hole, wherein the first connecting hole of one friction member is for allowing the first connecting rod to pass through, and the first connecting hole of the other friction member is for allowing the fourth connecting rod to pass through; A concave-cam connection structure, the concave-cam connection structure comprising: a first concave-convex portion, a second concave-convex portion, and a concave-convex connection portion connecting the first and second concave-convex portions; the first and second concave-convex portions each having a second connection hole, wherein the second connection hole of the first concave-convex portion is used for passing the first connecting rod, and the second connection hole of the second concave-convex portion is used for passing the fourth connecting rod; one side of the first and second concave-convex portions is a flat surface, and the other side is a concave-convex surface, and the flat surface is closer to the friction member than the concave-convex surface; Two concave-convex members, both of which are located on a side of the concave-cam connection structure away from the friction member and each having a third connecting hole, one side of each concave-convex member being a flat surface and the other side being a concave-convex surface, the concave-convex surface of one of the concave-convex members and the concave-convex surface of the first concave-convex portion being meshed with each other, and the third connecting hole of one of the concave-convex members being used for allowing the first connecting rod to pass through, the concave-convex surface of the other concave-convex member and the concave-convex surface of the second concave-convex portion being meshed with each other, and the third connecting hole of the other concave-convex member being used for allowing the fourth connecting rod to pass through; Two second elastic members, one end of one of the second elastic members contacts a plane of the concave-convex member and is used for the first connecting rod to pass through, and one end of the other second elastic member contacts a plane of the other concave-convex member and is used for the fourth connecting rod to pass through; A second stop structure, the second stop structure is located on the side of the two second elastic members away from the moving component, and is fixedly connected to the connecting covering member; one end of the second stop structure contacts the other end of one second elastic member, and the other end contacts the other end of another second elastic member.

11. The support device according to claim 10, characterized in that The first connecting rod and the second connecting rod have at least one flattened structure in cross section; the first connecting hole and the third connecting hole are flattened connecting holes matching the at least one flattened structure; the friction member and the concave-convex member are both capable of rotating synchronously with the first connecting rod and the fourth connecting rod; The first connecting rod and the fourth connecting rod are capable of rotating in the second connecting hole, and the concave cam connecting structure and the first connecting rod and the fourth connecting rod rotate asynchronously.

12. The supporting device according to claim 10, characterized in that The second elastic member is a square spring, which refers to a spring with a square cross section.

13. The support device according to any one of claims 1 to 7, and 9 to 12, characterized in that: The rotating assembly includes: two first flip plates, two fixing members, one connecting covering member, two sliding members, two first elastic members and two second flip plates.

14. A foldable display device, characterized in that: The foldable display device comprises: a flexible display module and a supporting device according to any one of claims 1 to 13; Wherein, the supporting device is located on the non-display surface of the flexible display module and is connected to the flexible display module to support the flexible display module.

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