CN213365988U

CN213365988U - Bendable display device

Info

Publication number: CN213365988U
Application number: CN202021720901.5U
Authority: CN
Inventors: 韦炜; 廖德知
Original assignee: Shenzhen Royole Technologies Co Ltd
Current assignee: Shenzhen Royole Technologies Co Ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-06-04
Anticipated expiration: 2030-08-18

Abstract

The application relates to the technical field of electronic equipment, in particular to a bendable display device. A bendable display device, comprising: a support member having an inner surface and an outer surface disposed opposite to each other in a thickness direction of the bendable display device; a flexible screen covering the inner surface and at least a portion of the outer surface; a connecting piece covering at least a portion of the outer surface; the flexible screen is correspondingly connected with the two side edges of the connecting sheet to form a ring, is sleeved on the supporting component and can move relative to the supporting component.

Description

Bendable display device

Technical Field

The application relates to the technical field of electronic equipment, in particular to a bendable display device.

Background

Existing electronic device terminals, such as mobile phones, tablet computers, portable music players, portable video players, handheld game consoles, etc., have been widely used.

With the updating of electronic products, the display screens of various electronic equipment terminals become larger and larger, because the larger display screen can provide richer information for users, improve the efficiency of human-computer communication, and bring better use experience. However, as the screen is increased, the external dimension of the electronic equipment terminal base body is also increased correspondingly; the increase of the size of the electronic equipment base body brings inconvenience for carrying and storing, which restricts the enlargement of the display screen.

The mobile phone capable of folding the display screen also appears in the prior art, but the folding mechanism of the mobile phone in the prior art can only be folded towards one direction, namely, only an inward folding or only an outward folding is realized, and the inward folding and the outward folding cannot be realized on the same mobile phone.

SUMMERY OF THE UTILITY MODEL

The application provides a bendable display device, aiming at realizing the inward and outward folding of the bendable display device.

Embodiments of the present application provide a bendable display device, which includes:

a support member having an inner surface and an outer surface disposed opposite to each other in a thickness direction of the bendable display device;

a flexible screen covering the inner surface and at least a portion of the outer surface;

a connecting tab covering at least a portion of the outer surface;

the flexible screen is correspondingly connected with the two side edges of the connecting piece to form a ring, is sleeved on the supporting component and can move relative to the supporting component.

In one possible design, the bendable display device can be bent around a bending axis, and during the process of switching the bendable display device from the unfolded state to the folded state, the parts of the flexible screen on two opposite sides of the bending axis can respectively move towards the directions pointing to the corresponding side edges;

in the process that the bendable display device is switched from the unfolding state to the folding state, the parts of the flexible screen, which are positioned on two opposite sides of the bending axis, can move towards the direction pointing to the bending axis.

In one possible design, the bendable display device further comprises a bending mechanism;

the support assembly comprises a first support and a second support;

the first supporting piece and the second supporting piece are connected to two opposite sides of the bending mechanism;

in the process of bending the bendable display device, the first supporting piece and the second supporting piece can rotate relatively through the bending mechanism.

In one possible design, the bending mechanism comprises a first linkage assembly and a second linkage assembly, wherein the first linkage assembly comprises a first connecting piece, a first moving piece and a second connecting piece which are sequentially and rotatably connected;

the second linkage assembly is arranged between the first connecting piece and the second connecting piece and comprises a second moving piece and a third moving piece which are connected in a rotating mode, the second moving piece is connected with the first connecting piece and the first moving piece in a shaft connection mode respectively, and the third moving piece is connected with the second connecting piece and the first moving piece in a shaft connection mode respectively.

In one possible design, the bendable display device further includes a limiting member disposed at least at one end of the bending mechanism;

the limiting piece is used for limiting the flexible screen and the connecting piece to protrude along the thickness direction of the bendable display device.

In one possible design, the position limiting member includes a main body, and the main body is provided with position limiting portions on two sides in the thickness direction of the bendable display device;

a limiting space is formed between the body part and the limiting part, and at least one part of the flexible screen and the connecting sheet, corresponding to the bending mechanism, is accommodated in the corresponding limiting space.

In one possible design, the bending mechanism includes covers connected to both ends of the support assembly, through which the flexible screen can extend from an inner surface to an outer surface of the bendable display device; or

The connecting tab can extend through the cover from an outer surface to an inner surface of the bendable display device.

In one possible design, a slide is formed between the cover and the end wall of the support assembly, and at least part of the flexible screen or the connecting sheet is accommodated in the slide and can move in the slide.

In one possible design, the supporting assembly is provided with a sliding groove along the movement direction of the flexible screen and the connecting sheet, and the sliding groove extends along the movement direction of the bendable display device;

at least part of the flexible screen and the connecting sheet are arranged in the sliding groove and can move along the sliding groove.

In one possible design, the bendable display device further includes a circuit board, and the flexible screen is connected to the circuit board through a flexible wire.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

FIG. 1 is a schematic structural diagram of a foldable display device according to an embodiment of the present application in an unfolded state;

FIG. 2 is a schematic structural diagram of a foldable display device according to an embodiment of the present application in a folded state;

FIG. 3 is a schematic structural view of the connection between the flexible screen and the connector of FIG. 1;

FIG. 4 is a schematic view of the flexible display device of FIG. 1 without flexible screens and connecting tabs;

FIG. 5 is a schematic view of FIG. 1 with a covering member omitted;

FIG. 6 is an enlarged view of area A in FIG. 5;

FIG. 7 is an enlarged view of area B of FIG. 5;

FIG. 8 is a schematic structural view of a covering member according to an embodiment;

FIG. 9 is a schematic cross-sectional view of FIG. 1;

FIG. 10 is a schematic cross-sectional view of FIG. 2;

FIG. 11 is a schematic structural view of a bending mechanism according to one embodiment;

FIG. 12 is an exploded view of FIG. 11;

FIG. 13 is a schematic structural diagram of a position limiting element according to an embodiment;

fig. 14 is a schematic structural diagram of a connection relationship between the circuit board and the support assembly in fig. 1.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

In the embodiments of the present application, the "longitudinal direction Y", "width direction X", and "thickness direction Z" are based on the orientation of the foldable display device in the unfolded state. As shown in fig. 1, when the foldable display device is in the unfolded state, the thickness direction Z is a direction in which a side of the electronic apparatus having the smallest dimension is located, and the thickness direction Z is substantially perpendicular to a plane in which the length direction Y and the width direction X are located; in a plane perpendicular to the thickness direction Z, the length direction Y refers to a direction in which a longer side of the bendable display device is located (or a direction in which a shorter side is located), and the width direction X refers to a direction in which a shorter side of the bendable display device is located (or a direction in which a longer side is located).

Referring to fig. 1 to 3, an embodiment of the present application provides a foldable display device, which may be a mobile phone, a notebook computer, a tablet computer, and the like. The bendable display device comprises a support member 1, a flexible screen 2 and a connecting sheet 3, wherein the support member 1 has an inner surface and an outer surface which are oppositely arranged along the thickness direction Z of the bendable display device. The inner surface is the inner surface of the bendable display device in the inward folding state, and the outer surface is the outer surface of the bendable display device in the inward folding state; or the inner surface is the outer surface when the bendable display device is in the outward folding state, and the outer surface is the inner surface when the bendable display device is in the outward folding state. The flexible screen 2 covers the inner surface and at least a portion of the outer surface, and the web 3 covers at least a portion of the outer surface. The flexible screen 2 can cover whole internal surface when turning over outward and infolding, guarantees that flexible screen 2 is in the display field of vision of display device that can bend, and flexible screen 2 corresponds with the both sides limit of connection piece 3 and links to each other and form the annular and the cover locates supporting component 1 to supporting component 1 motion relatively. It will be appreciated that the flexible screen 2 may be dimensioned to cover at least a portion of the outer surface and at least a portion of the inner surface of the support member 1, or may cover only a portion of the outer or inner surface of the support member 1, and the connecting piece 3 covers an area other than the portion covered by the flexible screen 2 and is connected to the flexible screen 2 to form a ring.

Referring to fig. 2, the foldable display device can be folded, and a larger display field of view can be realized with a smaller volume, and is convenient to carry and store. Specifically, the bendable display device comprises an inner bending part and an outer bending part, when the inner bending part is folded, most of the area of the flexible screen 2 is positioned on the inner side of the bendable display device, and a small part of the area of the flexible screen 2 is positioned on the outer side of the bendable display device, so that the flexible screen 2 is closed and in a protection state and is not easy to scratch; when the flexible display device is folded outwards, a part of the flexible screen 2 is positioned on the outer side of the foldable display device, and a small part of the flexible screen 2 is positioned on the inner side of the foldable display device. This embodiment can be according to the user demand, and the display device that will bend adjusts to the state of infolding or folding outward, solves the problem that flexible screen 2 can only infolding or can only fold outward among the existing equipment.

Referring to fig. 3, in one embodiment, the flexible screen 2 and the connecting sheet 3 are correspondingly connected to form a ring and are sleeved on the supporting assembly 1, and during the bending process of the bendable display device, the flexible screen 2 and the connecting sheet 3 can move relative to the supporting assembly 1, and the circumferences of the flexible screen and the connecting sheet do not change, that is, the arc length of the ring does not change. Can take place to remove relative supporting component 1 through flexible screen 2 and connection piece 3 to flexible screen 2 permanent long demand when folding inside and outside the matching reduces the risk that flexible screen 2 was extruded or was dragged by supporting component 1, improves the life of flexible screen 2. In addition, in the process of rotating the bendable display device, the supporting component 1 does not need to move to match the inner and outer folds of the flexible screen 2, the structure for matching the movement of the supporting component 1 is simplified, and the cost is reduced.

Referring to fig. 2, the foldable display device can be folded around a folding axis, wherein the folding axis is an axis in the middle of the foldable display device along the length direction Y. The flexible screen 2 and the connecting sheet 3 have the same circumference in the rotation process of the bendable display screen device. Specifically, in the process of switching the bendable display device from the unfolded state to the folded state, the parts of the flexible screen 2 on the two opposite sides of the bending axis can move towards the direction pointing to the corresponding connecting side edges respectively, and the two sides of the connecting sheet 3 move towards the direction close to the bending axis respectively. Wherein, the connecting side edges are two side edges correspondingly connected with the flexible screen 2 and the connecting sheet 3. In the process that display device that can bend switches over to the state of turning over outward from the expansion state, the flexible screen 2 lies in the relative both sides of axis of buckling the part can be to pointing to the direction motion of axis of buckling, and the both sides of connection piece 3 are respectively towards the direction motion of keeping away from the axis of buckling. The inner and outer folding of the foldable display device is realized by the movement of the flexible screen 2 and the connecting sheet 3. More specifically, in the process of switching the bendable display device from the unfolded state to the folded state, because the length of the connecting sheet 3 is kept unchanged, the parts of the flexible screen 2 on the two opposite sides of the bending axis are respectively pulled towards the direction of the corresponding connecting side edges through the connecting side edges, so that the area of the flexible screen 2 on the inner side of the bending is prevented from being extruded; in the process of switching the bendable display device from the unfolded state to the folded state, because the length of the connecting piece 3 is kept unchanged, the parts of the flexible screen 2 on the two opposite sides of the bending axis are respectively pushed towards the direction pointing to the bending axis through the connecting side edges, so that the area of the flexible screen 2 on the inner side of the bending is prevented from being stretched.

Referring to fig. 8, in a possible design, the foldable display device further includes a bending mechanism 4; the support assembly 1 comprises a first support 11 and a second support 12; along the length direction Y of the bendable display device, the first supporting piece 11 and the second supporting piece 12 are connected to two opposite sides of the bending mechanism 4; during the bending of the bendable display device, the first support 11 and the second support 12 can be relatively rotated by the bending mechanism 4. In the embodiment of the present application, during the process of bending the bendable display device, the first supporting member 11 and the second supporting member 12 can rotate around the bending mechanism 4 to realize inward bending or outward bending of the bendable display device. Alternatively, the bending mechanism 4 can realize the synchronous rotation of the first support 11 and the second support 12.

Referring to fig. 4 and 5, in a possible design, the supporting assembly 1 is provided with a sliding slot 111 along the moving direction of the flexible screen 2 and the connecting sheet 3, and the sliding slot 111 extends along the moving direction Y of the bendable display device; at least a portion of the flexible screen 2 and the connecting piece 3 is disposed in the slide groove 111 and can move along the slide groove 111.

In the embodiment of the present application, the first supporting member 11 and the second supporting member 12 are both provided with a sliding groove 111, and along the width direction X of the bendable display device, both ends of the flexible screen 2 and the connecting sheet 3 are both disposed in the sliding groove 111, and in the process of rotation of the bendable display device, the flexible screen 2 and the connecting sheet 3 can move along the sliding groove 111. The movement tracks of the flexible screen 2 and the connecting piece 3 are limited through the sliding groove 111, the flexible screen 2 and the connecting piece 3 are prevented from being separated from the supporting assembly 1 in the thickness direction Z of the bendable display device in the movement process, and the working reliability of the bendable display device is guaranteed.

Specifically, the first supporting member 11 and the second supporting member 12 have protruding portions extending in the thickness direction Z of the bendable display device at two opposite ends along the direction X, and the protruding portions extend along the direction Z for a distance and then extend along the direction X to a central area close to the bendable display device. Optionally, the protrusion is L-shaped. The slide groove 111 is formed between the protruding portion and the body portions of the first support 11 and the second support 12.

Referring to fig. 4, 6 and 7, in one possible design, the bending mechanism 4 includes covers 5, and the covers 5 are connected to both ends of the support assembly 1. In particular, the covering elements 5 are connected to the support assembly 1 at opposite ends thereof along the direction Y. The flexible screen 2 can extend from the inner surface to the outer surface of the bendable display device through the cover 5; alternatively, the connecting tabs 3 can extend from the outer surface to the inner surface of the bendable display device through the cover 5. In particular, when the size of the flexible screen 2 is larger than the area of the inner surface of the bendable display device, the flexible screen 2 can extend from the inner surface to the outer surface of the bendable display device through the cover 5; when the size of the flexible screen 2 is smaller than the area of the inner surface of the bendable display device, the connection tabs 3 can extend from the outer surface to the inner surface of the bendable display device through the cover 5.

In the embodiment of the application, the bendable display device comprises two covering parts 5, the two covering parts 5 are correspondingly installed on one sides of the first supporting part 11 and the second supporting part 12 far away from the bending mechanism 4, the flexible screen 2 and the connecting piece 3 are attached to the first supporting part 11 and the second supporting part 12 to move through the covering parts 5, and the arching or the exposure of the flexible screen 2 or the connecting piece 3 at the joint cambered surface of the inner surface and the outer surface is reduced. And, through at least part of this covering 5 and the chute 111 of first support 11 and second support 12 are relative, in order to block the side opening of chute 111, reduce the risk that minor impurity enters the flexible display device along chute 111.

Further, the covering member 5 is provided with a groove 51, a slide track 112 is formed between the groove 51 of the covering member 5 and the end wall of the support assembly 1, and at least a part of the flexible screen 2 or the connecting sheet 3 is accommodated in the slide track 112 and can move in the slide track 112. During the rotation of the bendable display device, the flexible screen 2 or the connecting sheet 3 can move along the sliding track 112, and the sliding track 112 is communicated with the sliding groove 111.

Specifically, the covering member 5 is long, a groove 51 is formed in the body of the covering member 5, and sealing portions are respectively arranged at two opposite ends of the body of the covering member 5, namely the sealing portions are arranged at openings at two opposite ends of the groove 51. And the sealing portion extends outward from the body of the cover 5 to correspond to the protrusion of the first support 11 or the second support 12, so that the groove 51 and the sliding groove 111 are communicated. In other embodiments, the groove 51 and the sliding groove 111 may not be communicated. The openings at the two ends of the groove 51 and the sliding groove 111 are respectively sealed.

Referring to fig. 8 to 12, in one possible design, the bending mechanism 4 includes a first linkage assembly 41 and a second linkage assembly 42, the first linkage assembly 41 and the second linkage assembly 42 are distributed along a width direction X of the bendable display device, the first linkage assembly 41 is used for driving the first support 11 and the second support 12 to rotate, and the second linkage assembly 42 is used for synchronizing the rotation of the first support 11 and the second support 12.

Referring to fig. 11, the first linkage assembly 41 includes a first connecting member 411, a first movable member 413, and a second connecting member 412, which are rotatably connected in sequence, wherein the first connecting member 411 is connected to the first support member 11, and the second connecting member 412 is connected to the second support member 12. Specifically, the first movable member 413 has a first tooth and a second tooth at two ends along the length direction Y of the flexible display device, one end of the first connecting member 411 close to the first movable member 413 has a third tooth engaged with the first tooth, and one end of the second connecting member 412 close to the first movable member 413 has a fourth tooth engaged with the second tooth. The second linkage assembly 42 is disposed between the first connection element 411 and the second connection element 412, the second linkage assembly 42 includes a second movable element 421 and a third movable element 422 which are rotatably connected, the second movable element 421 has a fifth tooth, the third movable element 422 has a sixth tooth, and the fifth tooth is engaged with the sixth tooth. The second movable member 421 is respectively coupled to the first connecting member 411 and the first movable member 413, and the third movable member 422 is respectively coupled to the second connecting member 412 and the first movable member 413, so as to realize the synchronous rotation of the first support 11 and the second support 12.

Referring to fig. 11, the bending mechanism 4 further includes a rotating shaft assembly 43, and the rotating shaft assembly 43 is used for connecting the first linkage assembly 41 and the second linkage assembly 42. The rotating shaft assembly 43 includes a first shaft 431, a second shaft 432, a third shaft 433, and a fourth shaft 434, the first shaft 431 is connected to the first connecting member 411 and the second moving member 421, the second shaft 432 is connected to the first moving member 413 and the second moving member 421, the third shaft 433 is connected to the first moving member 413 and the third moving member 422, and the fourth shaft 434 is connected to the second connecting member 412 and the third moving member 422.

The bending mechanism 4 further comprises at least two shaft sleeves 44, the rotating shaft assembly 43 penetrates through the shaft sleeves 44, the shaft sleeves 44 can rotate along with the rotating shaft assembly 43 in the rotating process of the bendable display device, and the connecting sheet 3 is connected with the shaft sleeves 44.

Referring to fig. 11 and 13, in a possible design, the foldable display device further includes a limiting member 45 disposed at least at one end of the bending mechanism 4; the stoppers 45 are used to restrict the flexible screen 2 and the connecting pieces 3 from protruding in the thickness direction Z of the bendable display device. In the embodiment of the application, the two ends of the bending mechanism 4 are provided with the limiting parts 45 along the width direction X of the bendable display device, and at least part of the limiting parts 45 is abutted to the flexible screen 2 and the connecting sheet 3 in the thickness direction Z of the bendable display device, so that the risk that the flexible screen 2 and the connecting sheet 3 protrude in the rotating process is reduced, and the working reliability of the bendable display device is improved.

Referring to fig. 12, the position-limiting member 45 further includes a main body portion 451, and two sides of the main body portion 451 along the thickness direction Z of the bendable display device are respectively provided with a position-limiting portion 452; a spacing space is formed between the body portion 451 and the spacing portion 452, and at least a portion of the flexible screen 2 and the connecting sheet 3 corresponding to the bending mechanism 4 is accommodated in the corresponding spacing space. The stopper 452 abuts against the connecting sheet 3 and the flexible screen 2, so that the risk of the connecting sheet 3 and the flexible screen 2 protruding in the folding process is reduced. The two limiting members 45 at the two ends of the bending mechanism 4 may be disposed two by two, the two limiting members 45 are disposed corresponding to the positions of the second movable member 422 and the third movable member 422, the two limiting members 45 are connected to the rotating shaft assembly 43, and the two limiting members 45 can rotate along with the rotating shaft assembly in the rotating process of the bendable display device. It is understood that, in other embodiments, the limiting space is communicated with the sliding groove 111, and the limiting portion 452 is connected with the protruding portion of the first support 11 or the second support 12 to isolate the limiting space from the outside.

Referring to fig. 10 and 11, the foldable display device further includes a shielding member 46, wherein the shielding member 46 is connected to the limiting member 45 for shielding the side end surface of the bending mechanism 4 in the width direction X. The shielding assembly 46 includes a first shielding member 461, a second shielding member 462 and a third shielding member 463, the first shielding member 461 is located at the middle portion of the two position-limiting members 45, the second shielding member 462 and the third shielding member 463 are respectively located at the two sides of the first shielding member 461, and the second shielding member 462 and the third shielding member 463 are respectively spliced with the corresponding first supporting member 11 and the second supporting member 12. The first shielding element 461 is connected to the second shaft 432 and the third shaft 433, the second shielding element 462 is connected to the first shaft 431, and the third shielding element 463 is connected to the fourth shaft 434, so that during the rotation of the foldable display device, the second shielding element 462 and the third shielding element 463 can rotate relative to the first shielding element 461 to cooperate with the rotation of the bending mechanism 4 to cover the foldable display device at any time.

Referring to fig. 14, in one possible design, the foldable display device further includes a circuit board 6, and the flexible screen 2 is connected to the circuit board 6 by flexible wires, so that the flexible screen 2 is not limited by the flexible wires when moving relative to the circuit board 6. In particular, the circuit board 6 is connected to the non-connected side of the flexible screen 2. The connection of the circuit board 6 and the flexible screen 2 is not affected when the flexible screen 2 is moved. Wherein, the non-connection side is the side of the flexible screen 2 except the connection side.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bendable display device, comprising:

a support member (1), the support member (1) having an inner surface and an outer surface arranged oppositely along a thickness direction (Z) of the bendable display device;

a flexible screen (2), said flexible screen (2) covering said inner surface and at least a portion of said outer surface;

a connecting tab (3), the connecting tab (3) covering at least part of the outer surface;

the flexible screen (2) is correspondingly connected with the two side edges of the connecting sheet (3) to form a ring, is sleeved on the supporting component (1), and can move relative to the supporting component (1).

2. A bendable display device according to claim 1, wherein the bendable display device is capable of bending around a bending axis, and during the switching of the bendable display device from the unfolded state to the folded state, the parts of the flexible screen (2) at two opposite sides of the bending axis are capable of moving towards the corresponding side respectively;

in the process of switching the bendable display device from the unfolded state to the folded state, the parts of the flexible screen (2) on two opposite sides of the bending axis can move towards the direction pointing to the bending axis.

3. A bendable display device according to claim 1, characterized in that the bendable display device further comprises a bending mechanism (4);

the support assembly (1) comprises a first support (11) and a second support (12);

the first supporting piece (11) and the second supporting piece (12) are connected to two opposite sides of the bending mechanism (4);

during the bending process of the bendable display device, the first supporting piece (11) and the second supporting piece (12) can rotate relatively through the bending mechanism (4).

4. A bendable display device according to claim 3, characterized in that the bending mechanism (4) comprises a first linkage assembly (41) and a second linkage assembly (42), the first linkage assembly (41) comprises a first connecting member (411), a first movable member (413) and a second connecting member (412) which are rotatably connected in sequence;

the second linkage assembly (42) is arranged between the first connecting piece (411) and the second connecting piece (412), the second linkage assembly (42) comprises a second movable piece (421) and a third movable piece (422) which are connected in a rotating mode, the second movable piece (421) is connected with the first connecting piece (411) and the first movable piece (413) in a shaft mode respectively, and the third movable piece (422) is connected with the second connecting piece (412) and the first movable piece (413) in a shaft mode respectively.

5. A bendable display device according to claim 3, characterized in that the bendable display device further comprises a stopper (45) provided at least at one end of the bending mechanism (4);

the limiting piece (45) is used for limiting the protrusion of the flexible screen (2) and the connecting piece (3) along the thickness direction (Z) of the bendable display device.

6. A bendable display device according to claim 5, wherein the stopper (45) comprises a body part (451), the body part (451) is provided with a stopper part (452) on both sides in the thickness direction (Z) of the bendable display device;

a limiting space is formed between the body part (451) and the limiting part (452), and at least one part of the flexible screen (2) and the connecting sheet (3) corresponding to the bending mechanism (4) is accommodated in the corresponding limiting space.

7. A bendable display device according to any of claims 3-6, characterized in that the bending mechanism (4) comprises a cover (5), the cover (5) is connected to both ends of the support assembly (1), the flexible screen (2) is extendable from the inner surface to the outer surface of the bendable display device through the cover (5); or

The connecting tab (3) is extendable from an outer surface to an inner surface of the bendable display device through the cover (5).

8. A bendable display device according to claim 7, characterized in that a slide (112) is formed between the cover (5) and the end wall of the support assembly (1), at least part of the flexible screen (2) or the connecting tab (3) being received in the slide (112) and being movable within the slide (112).

9. A bendable display device according to any one of claims 1-6, wherein the support assembly (1) has a sliding slot (111) along the movement direction of the flexible screen (2) and the connecting sheet (3), the sliding slot (111) extending along the movement direction (Y) of the bendable display device;

at least part of the flexible screen (2) and the connecting sheet (3) is arranged on the sliding groove (111) and can move along the sliding groove (111).

10. A bendable display device according to any one of claims 1-6, characterized in that the bendable display device further comprises a circuit board (6), the flexible screen (2) is connected with the circuit board (6) by a flexible wire.