CN114512056B

CN114512056B - Display device

Info

Publication number: CN114512056B
Application number: CN202011281207.2A
Authority: CN
Inventors: 汤小强; 陈永亮; 尹斌; 李锡伟
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2023-03-21
Anticipated expiration: 2040-11-16
Also published as: CN114512056A; WO2022100241A1

Abstract

The embodiment of the application provides a display device, which comprises a first carrier, a second carrier, a driving piece, a flexible screen assembly, a supporting piece and a plurality of first limiting pieces, wherein the second carrier and the first carrier can move in the directions close to or far away from each other; the driving piece is arranged on the second carrier, can move along with the second carrier, and is provided with a limiting structure; the flexible screen assembly comprises a main body part and an expansion part which are connected with each other, the main body part is arranged on the outer surface of the first carrier, the expansion part is arranged on the second carrier, and the expansion part can move around the driving piece along with the mutual movement of the first carrier and the second carrier so as to be contained in the second carrier or extend out of the second carrier; the supporting piece is arranged on one side of the non-display surface of the expansion part and is used for being matched with the limiting structure to limit the distance between the expansion part and the driving piece. The display device of the embodiment of the application can prevent the bending position of the flexible screen assembly from arching.

Description

Display device

Technical Field

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

Background

With the development of electronic technology, the degree of intelligence of display devices such as smart phones is increasing. The display device can display a picture through a display screen thereof.

Among them, the flexible display screen is receiving attention because it has a characteristic of being foldable and bendable, and the overall size of the display device can be reduced by folding or bending the flexible display screen. However, flexible displays tend to bow during movement.

Disclosure of Invention

The embodiment of the application provides a display device, which can prevent the arching of the bending position of a flexible screen assembly.

A display device, comprising:

a first carrier;

a second carrier, the second carrier and the first carrier being movable in directions to approach or separate from each other;

the driving piece is arranged on the second carrier, can move along with the second carrier, and is provided with a limiting structure;

the flexible screen assembly comprises a main body part and an expansion part which are connected with each other, the main body part is arranged on the outer surface of the first carrier, the expansion part is arranged on the second carrier, and the expansion part can move around the driving piece along with the mutual movement of the first carrier and the second carrier so as to be contained in the second carrier or extend out of the second carrier; and

the supporting piece is arranged on one side of the non-display surface of the expansion part and is used for being matched with the limiting structure to limit the distance between the expansion part and the driving piece.

The limiting structures on the supporting piece and the driving piece of the embodiment of the application are matched with each other, so that the distance between the expansion part and the driving piece is limited to prevent the arch camber of the expansion part.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic view of a first structure of a display device according to an embodiment of the present disclosure.

Fig. 2 is a second structural schematic diagram of a display device according to an embodiment of the present application.

Fig. 3 is a cross-sectional view of the display device shown in fig. 1 taken along the direction P1-P1.

Fig. 4 is a first cross-sectional view of the display device shown in fig. 2 taken along the direction P2-P2.

Fig. 5 is a schematic diagram illustrating the flexible screen assembly and the supporting bars of the display device according to the embodiment of the present disclosure.

Fig. 6 is an enlarged view of a portion a shown in fig. 5.

Fig. 7 is a schematic diagram of a matching structure of a first carrier and a second carrier in a display device provided in an embodiment of the present application.

Fig. 8 is a schematic structural diagram of a driving member in the first carrier and the second carrier shown in fig. 7.

Fig. 9 is a second cross-sectional view of the display device shown in fig. 2 taken along the direction P2-P2.

Fig. 10 is a schematic structural diagram of a driving member in the display device shown in fig. 2.

Fig. 11 is a schematic structural diagram of a third display device according to an embodiment of the present application.

Fig. 12 is a schematic diagram of a fourth structure of a display device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to 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.

Referring to fig. 1 to 4, fig. 1 is a first structural schematic diagram of a display device according to an embodiment of the present disclosure, fig. 2 is a second structural schematic diagram of the display device according to the embodiment of the present disclosure, fig. 3 is a first cross-sectional view of the display device shown in fig. 1 along a direction P1-P1, and fig. 4 is a first cross-sectional view of the display device shown in fig. 2 along a direction P2-P2. The display device 20 may include a first carrier 100, a second carrier 200, and a flexible screen assembly 300. The first and

second carriers

100 and 200 are slidably connected such that the first and

second carriers

100 and 200 are relatively moved in directions approaching or separating from each other, so that switching between the expanded state and the collapsed state can be achieved. In this case, a furled state may be referred to fig. 1 and 2, that is, a state in which the first carrier 100 and the second carrier 200 are relatively moved in a direction to approach each other to be finally formed. In which the unfolded state may be referred to fig. 3 and 4, i.e., a state in which the first and

second carriers

100 and 200 are relatively moved in a direction away from each other.

It will be appreciated that the first carrier 100 and the second carrier 200 may undergo relative movement to achieve lateral stretching of the display device 20. Here, the lateral drawing refers to a manner of drawing in a direction parallel to the display direction of the flexible screen assembly 300. So, can freely adjust display device 20's screen display area's size, can expand display device 20's display part and improve user's operation experience when needs use the large screen, simultaneously, when need not use the large screen, can not expand display part to make the complete machine size less, conveniently carry.

It should be noted that the unfolded state of the first carrier 100 and the second carrier 200 may be various, such as that the maximum moving distance of the first carrier 100 and the second carrier 200 in the direction away from each other is H, and the first carrier 100 and the second carrier 200 may move away from each other in the folded state to achieve the unfolded state with different distances by the same distance as one quarter H, one half H, and three quarters H. The states of the progressive margin may be defined as a first developed state, a second developed state, a third developed state, and the like in this order.

It should be noted that when the first carrier 100 and the second carrier 200 are in the first unfolded state, such as the distance of the relative moving away of the first carrier 100 and the second carrier 200 in the first unfolded state is a quarter H, the first carrier 100 and the second carrier 200 can still perform the relative moving away to reach the second unfolded state, such as the distance of the relative moving away of the first carrier 100 and the second carrier 200 in the second unfolded state is a half H.

It is to be understood that the one or more unfolded states of the first and

second carriers

100 and 200 of the embodiments of the present application are only examples and do not constitute a limitation on the unfolded states of the first and

second carriers

100 and 200 of the embodiments of the present application.

In the embodiment of the present application, one end of the flexible screen assembly 300 is fixedly connected to the first carrier 100, and the other end of the flexible screen assembly 300 is fixedly connected to the second carrier 200, for example, the other end of the flexible screen assembly 300 may be directly fixedly connected to the second carrier 200, and the other end of the flexible screen assembly 300 may also be fixedly connected to the second carrier 200 through a connecting member (such as a transmission belt). The first and

second carriers

100 and 200 may support the flexible screen assembly 300. The first carrier 100 and the second carrier 200 may drive the flexible screen assembly 300 to move together or drive the flexible screen assembly 300 to move during the mutual movement, so that the length of the flexible screen assembly 300 may be adjusted, and the size of the display area of the electronic device may be changed.

When the first carrier 100 and the second carrier 200 are in the folded state, a portion of the flexible screen assembly 300 is directly exposed outside the display device 20, a portion of the flexible screen assembly 300 is received inside the display device 20, or a portion of the flexible screen assembly 300 is located on a first side of the display device 20, and a portion of the flexible screen assembly 300 is located on a second side of the display device 20, that is, the flexible screen assembly 300 is simultaneously located on the front and the back of the display device 20 in the folded state. When the first carrier 100 and the second carrier 200 are relatively moved from the folded state to be unfolded, a portion of the flexible screen assembly 200, which is originally received inside the display device 20, moves to the outside of the display device 20, so that the entire flexible screen assembly 200 is exposed outside the display device 20.

It is understood that when the first carrier 100 and the second carrier 200 are in the folded state, a portion of the display area of the flexible screen assembly 300 located on the outer surface of the display device 20 may display a picture, and another portion of the display area of the flexible screen assembly 300 located on the inner portion of the display device 20 may not display a picture. When the first carrier 100 and the second carrier 200 are in the unfolded state, the display areas of the flexible screen assembly 300 are located on the outer surface of the display device 20, and can jointly display the picture.

The flexible screen assembly 300 may include a body portion 310 and an extension portion 320 that are connected to each other, and the body portion 310 may be secured to the outer surface of the first carrier 100, such as by adhesively bonding the body portion 310 to the outer surface of the first carrier 100 with a glue layer. So that the main body portion 310 can be always maintained at the outer surface of the first carrier 100 during the use of the display device 20 to ensure that the display device 20 can display a picture through at least the main body portion 310 in any state.

The extension portion 320 may be disposed at the second carrier 200, and the extension portion 320 may be capable of moving to be received in the second carrier 200 or protruding to an outer surface of the second carrier 200 following the mutual movement of the first carrier 100 and the second carrier 200. When the expansion part 320 is located inside the second carrier 200, the first carrier 100 and the second carrier 200 are in a collapsed state, and the first carrier 100 and the second carrier 200 are moved in a direction away from each other to drive the expansion part 320 to extend from the inside of the second carrier 200 to the outer surface of the second carrier 200. A screen may be displayed in conjunction with the body portion 310. When the expansion part 320 is located on the outer surface of the second carrier 200, the first carrier 100 and the second carrier 200 are in the unfolded state, and the first carrier 100 and the second carrier 200 are moved in the direction to approach each other, so that the expansion part 320 can be driven to be folded from the outer surface of the second carrier 200 into the second carrier 200.

It is understood that the main body portion 310 of the flexible screen assembly 300 may be fixedly attached directly to the outer surface of the first carrier 100 by using an adhesive layer or the like, and the stability and flatness of the main body portion 310 may be maintained. The extension portion 320 of the flexible screen assembly 300 moves along with the movement of the first carrier 100 and the second carrier 200, and cannot be directly fixedly connected to the second carrier 200 by using a connection structure such as an adhesive layer like the main body portion 310. During movement of the extension portion 320, changes in the shape of the extension portion 320 may be easily caused, such as arching of the extension portion 320, which may affect the display effect of the flexible screen assembly 300.

It should be noted that, a tolerance needs to be reserved in the assembly production process, and in the actual assembly process, a difference in tolerance may exist, which causes a change in the arching amount. Resulting in poor uniformity of the display device.

It should be noted that the flexible screen assembly 300 may be movable, and the first carrier 100 and the second carrier 200 may be movable, that is, the display device 20 of the embodiment of the present application has a plurality of movable components. Which tends to result in greater and greater clearances created during movement of flexible screen assembly 300. Considering again the problem of degradation of flexible screen assembly 300, it also results in larger and larger gaps during movement of flexible screen assembly 300. In particular, the expanded portion 320 of the flexible screen assembly 300 may be spaced apart from the second carrier 200 in the thickness direction of the flexible screen assembly 300.

Based on this, the display device 20 of the embodiment of the present application further includes a supporting member 400 and a plurality of magnetic members 500, the supporting member 400 is disposed on the non-display surface of the extension portion 320 and can support the extension portion 320, and the plurality of magnetic members 500 can cooperate with the supporting member 400 to limit the distance between the extension portion 320 and the second carrier 200 when the extension portion 320 extends out of the second carrier 200, so that the distance between the extension portion 320 and the second carrier 200 is maintained within a preset distance, the extension portion 320 is prevented from arching due to an excessively large distance between the extension portion 320 and the second carrier 200, and particularly, the extension portion 320 can be prevented from arching when extending out of the outer surface of the second carrier 200.

It will be appreciated that the support member 400 and the one or more magnetic members 500 cooperate to allow the extension 320 to be spaced less from the second carrier 200 during movement or to allow the support member 400 to move against the surface of the second carrier 200. The second carrier 200 may provide support to the extension 320 during movement of the extension 320, thereby preventing a portion of the extension 320 from arching or wrinkling without being supported by the second carrier 200.

It should be noted that the supporting member 400 may be disposed on the entire non-display surface of the expansion portion 320, a part of the non-display surface of the expansion portion 320, or the entire non-display surface of the flexible screen assembly 300.

Referring to fig. 5 and 6, fig. 5 is a schematic diagram illustrating a flexible screen assembly and a supporting bar of a display device according to an embodiment of the present disclosure, and fig. 6 is an enlarged view of a portion a shown in fig. 5. The supporting member 400 may be formed by combining a plurality of strip-shaped supporting bars, each of which has magnetism and is attracted by a magnet, such as a supporting bar made of a metal material or an alloy material that is attracted by a magnet, such as a supporting bar made of one or more of iron, nickel, and cobalt. The plurality of supporting bars are arranged at intervals on the non-display surface of the expansion portion 320 in the moving direction of the flexible screen assembly 300, and may also be arranged on the non-display surface of the main body portion 310. Such as a plurality of support bars, arranged at equal intervals. The supporting member 400 may also be a magnetic net-shaped supporting member, and the net-shaped supporting member may be disposed on the entire non-display surface of the extension portion 320 and may be disposed on the entire non-display surface of the body portion 310. The supporting member 400 may also be a single magnetic supporting plate or a plurality of magnetic supporting blocks, and the supporting blocks may be disposed at predetermined positions on the non-display surface of the second display portion 320. It should be noted that the plurality of support bars may also support the flexible screen assembly 300, and the mesh-shaped support members may also support the flexible screen assembly 300.

It will be appreciated that the support bars are bar-shaped structures and that the plurality of support bars are distributed along the axial direction of the bending arc of the flexible screen assembly 300 without increasing the bending resilience of the flexible screen assembly 300. The mesh-shaped supporting members are laid on the non-display surface of the flexible screen assembly 300, and are distributed in both the axial direction and the radial direction of the bending arc of the flexible screen assembly 300, so that the bending resilience of the flexible screen assembly 300 is additionally increased. It should be noted that, in practical applications, if the thickness of the mesh-shaped supporting member is relatively thin, the supporting effect on the flexible screen assembly 300 is relatively poor, and if the thickness of the mesh-shaped supporting member is relatively thick, the flexible screen assembly 300 is not easy to bend. The support blocks do not provide effective support for the flexible screen assembly 300. The embodiment of the present application will be described below by taking the supporting member 400 as a plurality of supporting bars.

The supporting member 400 and the magnetic member 500 of the embodiment of the present application can interact with each other, such as attracting each other, to limit the distance from the second carrier 200 when the extension portion 320 protrudes to the outer surface of the second carrier 200. Such as one or more support bars to which magnets may be attracted, including but not limited to neodymium magnets, ordinary magnets, flexible magnets, or electromagnets. The support strip attracted by the magnet can be a support strip positioned right above the magnet or a support strip positioned right above the magnet and close to the magnet.

As shown in fig. 7, fig. 7 is a schematic view of a matching structure of a first carrier and a second carrier in a display device provided by an embodiment of the present application. The second carrier 200 may include a plurality of straight portions 210 and a plurality of bent portions 220, the plurality of straight portions 210 being spaced apart from each other, the plurality of straight portions 210 may support the extension portion 320; the plurality of bent portions 220 are connected to a portion of the plurality of straight portions 210, and the expanded portion 320 is movable around the plurality of bent portions 220.

Here, at least a portion of the one or more magnetic members 500 is disposed on the flat portion 210, for example, a portion of the one or more magnetic members 500 may be disposed on the flat portion 210, or all of the magnetic members 500 may be disposed on the flat portion 210.

As shown in fig. 7, the flat portion 210 may be provided with a first receiving groove 211, such as one of the plurality of flat portions 210 is provided with one or more first receiving grooves 211, or a plurality of the plurality of flat portions 210 is provided with one or more first receiving grooves 211. One first receiving groove 211 may receive one or more of the plurality of magnetic members 500. For example, the second carrier 200 may include fifteen flat portions 210, wherein a portion of the flat portions 210 is provided with one first receiving groove 211, a portion of the flat portions 210 is provided with a plurality of first receiving grooves 211, and one first receiving groove 211 is provided with one magnetic member 500 or a plurality of magnetic members 500.

One or more magnetic members 500 may be partially disposed on the straight portion 210 and partially disposed on the bent portion 220. For example, the bent portion 220 may be provided with the second receiving groove 221, for example, one of the plurality of bent portions 220 may be provided with one or more second receiving grooves 221, or a plurality of the plurality of bent portions may each be provided with one or more second receiving grooves 221. One second receiving groove 211 may receive one or more of the plurality of magnetic members 500. For example, the second carrier 200 may include four bending portions 220, one bending portion 220 may be connected with three straight portions 210, two adjacent bending portions 220 have an opening 222 therebetween, and a portion of the plurality of straight portions 210 may be connected with each other and located in one opening 222. One bent portion 220 may be provided with one second receiving groove 221, and of course, one bent portion 220 may also be provided with a plurality of second receiving grooves 221. One second receiving groove 211 may receive one or more magnetic members 500.

In practical applications, due to the nature of flexible screen assembly 300, extension 320 may have a greater spring back stress in the bent position than in the flat position, which may facilitate arching. In the embodiment of the present application, the size of the magnet disposed in the first receiving groove 211 is smaller than that of the magnet disposed in the second receiving groove 221, that is, the size of the magnet corresponding to the bent position of the extension portion 320 is larger than that of the magnet corresponding to the straight position of the extension portion 320, so that the magnetic force applied to the portion of the support 400 corresponding to the bent position of the extension portion 320 can be increased, the bending arching stress of the extension portion 320 itself can be overcome, and the extension portion 320 is ensured not to arch at the position of the curved arc, so as to bring better user experience.

Referring to fig. 7 and 8, fig. 8 is a schematic structural view of the driving member in the first carrier and the second carrier shown in fig. 7. The display device 20 may further include a driver 600, the driver 600 being disposed on the second carrier 200, the driver 600 being movable with the second carrier 200 relative to the first carrier 100, and the extension portion 320 being movable around the driver 600. The driving member 600 is located at the bending position of the extension portion 320 and abuts against the supporting member 400, so that the driving member 600 and the supporting member 400 can support the bending position of the extension portion 320 together.

The plurality of bent portions 220 are connected to the driver 600, and the extended portion 320 may move around the bent portions 220 and the driver 600. When the first carrier 100 and the second carrier 200 move in the direction away from each other, the driver 600 may drive at least a portion of the extension portion 320 and at least a portion of the supporting member 400 to gradually rotate to the outer surface of the second carrier 200 along the outer surface of the driver 600, at least a portion of the extension portion 320 is exposed at the outer surface of the second carrier 200, a portion of the extension portion 320 exposed to the outer surface of the second carrier 200 may display information together with the main body portion 310, and a display area may be increased compared to a display only with the main body portion 310. When the first carrier 100 and the second carrier 200 move in a direction approaching each other, the extension portion 320 may gradually rotate to the inside of the second carrier 200 along the outer surface of the driving member 600 in a direction approaching the first carrier 100, so that at least a portion of the extension portion 320 is accommodated in the second carrier 200, and the extension portion 320 drives the driving member 600 and the second carrier 200 to move in a direction approaching the first carrier 100 during the movement process, thereby shortening the distance between the driving member 600 and the first carrier 100 and the distance between the second carrier 200 and the first carrier 100.

In other embodiments, the driver 600 is provided with a limiting structure that can cooperate with the support 400 to limit the spacing between the expanded portion 320 and the driver 600, preventing the bowed position of the expanded portion 320 from arching. The position limiting structure may include one or more magnets, and the one or more magnets may be disposed around the outer surface of the driver 600.

For example, as shown in fig. 8, the driving member 600 may include a rotating shaft 610 and a plurality of rollers 620, the plurality of rollers 620 are spaced apart from each other, and one or more magnets (not shown) are disposed around the outer circumferential surface of the rotating shaft 610 and between the spaced positions of two adjacent rollers 620. The limiting structure may be flush with the outer surface of the roller 620, so that the driving member 600 and the limiting structure together form a flat supporting surface to support the extension portion 320.

It will be appreciated that due to the nature of flexible screen assembly 300 itself, the rebound stress of extension 320 is greatest in the curved or radiused region and is also relatively large compared to the flat or straight section. The stopper 600 is provided with a stopper structure to enhance an attractive force to the bent region of the expansion part 320 to overcome an arching stress of the expansion part 320 itself to ensure that the expansion part 320 is not arching in the bent region.

In the embodiment of the present application, one or more rollers 620 may rotate around the rotating shaft 610, and the one or more rollers 620 may be rotated around the rotating shaft 610 when the extension portion 320 moves around the driving member 600. Compared with the roller 620 fixedly connected with the rotating shaft 610, the rotatable roller 620 of the embodiment of the present application may also reduce friction to the support 400.

It should be noted that the structure of the driver 600 according to the embodiment of the present application is not limited thereto. For example, as shown in fig. 9 and 10, fig. 9 is a second cross-sectional view of the display device shown in fig. 2 along a direction P2-P2, and fig. 10 is a schematic structural view of a driving member in the display device shown in fig. 2. The driver 600 may also only include the rotating shaft 610, and the outer surface of the rotating shaft 610 is provided with a limiting structure 700, for example, the limiting structure 700 may be a ring magnet, the ring magnet is sleeved on the outer surface of the limiting structure 700, and the limiting structure 700 may cooperate with the supporting member 400 to limit the distance between the extension portion 320 and the driver 600.

It can be understood that, in the embodiment of the present application, the ring magnet is directly added to the outer ring of the rotating shaft 610, the ring magnet is fixed to the rotating shaft 610, and can rotate along with the rotating shaft 610 to form rolling friction with the curved portion of the supporting member 400, and meanwhile, the ring magnet can generate magnetic force to the curved portion of the supporting member 400, so as to overcome the arching external tension generated by the expansion portion 320 at the curved position of the rotating shaft 610, and ensure that the expansion portion 320 does not arch at the curved arc position, so as to bring better user experience.

Referring to fig. 9 and 10, in the embodiment of the present invention, the second carrier 200 may include only the flat portion 210, and the flat portion 210 and the driving member 600 are connected to the second carrier 200 at the same time.

It should be noted that the driving member 600 shown in fig. 7 and 8 may also adopt a diameter space of the rotating shaft itself, and the discontinuous glue reduction is performed at a local clearance position of the rotating shaft, where the supporting member 400 may be engaged, and the local clearance of the rotating shaft does not affect the rotation and the unfolding of the supporting member 400 and the extension portion 320 around the rotating shaft due to the rigid characteristic of the supporting member 400 in the direction perpendicular to the moving direction of the flexible screen assembly 300. The driving member 600 shown in fig. 9 and 10 does not need to cut a clearance for the rotating shaft relative to the driving member 600 shown in fig. 7 and 8, the radius of the rotating shaft can be reduced, the annular magnet is directly added on the outer ring, and the annular magnet is fixed on the rotating shaft and can rotate along with the rotating shaft.

According to the embodiment of the application, the characteristics of the space layout and the structural parts of the expansion part can be utilized, corresponding magnets are added or ring magnets are added at required positions, the conformability of the expansion part 320 is guaranteed, and the arching problem of the expansion part 320 is solved.

The manner of drawing the display device 20 is not limited to this. For example, please refer to fig. 11 and 12, in which fig. 11 is a third structural diagram of the display device according to the embodiment of the present application, and fig. 10 is a fourth structural diagram of the display device according to the embodiment of the present application. The electronic device such as the display device 40 provided by the embodiment of the present application may be drawn in a transverse direction, the display device 40 may include a first carrier 41, a second carrier 42 and a flexible screen assembly 43, the first carrier 41 and the second carrier 42 are used for carrying the display device 40 together, and the first carrier 41 and the second carrier 42 may move relatively to enable a portion of the flexible screen assembly 43 to be unfolded outside the display device 40 or folded inside the display device 40. Here, the longitudinal drawing refers to a manner of drawing in a direction perpendicular to the display direction of the flexible screen assembly 43.

The display device provided in the embodiments of the present application is described in detail above. The principles and implementations of the present application are described herein using specific examples, which are presented only to aid in understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A display device, comprising:

a first carrier;

the flexible screen assembly comprises a main body part and an expansion part which are connected with each other, the main body part is arranged on the outer surface of the first carrier, the expansion part is arranged on the second carrier, and the expansion part can move around the driving piece along with the mutual movement of the first carrier and the second carrier so as to be contained in the second carrier or extend out of the second carrier;

the supporting piece is arranged on one side of the non-display surface of the expansion part and is used for being matched with the limiting structure to limit the distance between the expansion part and the driving piece; and

the magnetic pieces are arranged on the second carrier and used for attracting the supporting pieces to each other;

wherein, the second carrier includes a plurality of straight portions and a plurality of kink, and is a plurality of straight portion separates the setting each other, straight portion is used for supporting extension portion, straight portion is provided with the first groove of accomodating in order to set up the part magnetism spare, the kink is connected with some in a plurality of straight portions, extension portion can be around a plurality of the kink motion, the kink is provided with the second and accomodates the groove in order to set up the part magnetism spare, set up in the first size of accomodating the magnetism spare in groove be less than set up in the second accomodates the size of the magnetism spare in groove.

2. The display device according to claim 1, wherein the driving member includes a rotating shaft, and the limiting structure includes one or more magnets disposed around a peripheral outer surface of the rotating shaft, the one or more magnets generating an attractive force with the supporting member to limit a distance between the expanded portion and the driving member.

3. The display device according to claim 1, wherein the driving member includes a rotating shaft and a plurality of rollers, the rollers are spaced apart from each other, and the limiting structure includes one or more magnets, the one or more magnets are disposed around a peripheral outer surface of the rotating shaft and located between two adjacent rollers at a spacing position.

4. A display device as claimed in claim 3, characterised in that the spacing structure is flush with the outer surface of the roller.

5. The display device according to claim 3, wherein the one or more rollers are rotatable about the rotation axis, and the one or more rollers are rotated about the rotation axis when the extension portion moves about the driving member.

6. The display device according to any one of claims 1 to 5, wherein the supporting member comprises a plurality of supporting bars arranged at intervals on the non-display surface side of the expansion portion in the moving direction of the expansion portion, and the limiting structure can generate attraction force with the adjacent supporting bars.

7. The display device according to any one of claims 3 to 5, wherein the plurality of bending portions are connected to the rotation shaft and one bending portion is located between two adjacent rollers, and the extending portion is movable around the plurality of bending portions and the rollers.