CN210324969U

CN210324969U - Slide plate type supporting structure and flexible display device

Info

Publication number: CN210324969U
Application number: CN201921664284.9U
Authority: CN
Inventors: 李萌
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-04-14
Anticipated expiration: 2029-10-08
Also published as: WO2021068800A1

Abstract

The application discloses slide formula bearing structure and flexible display device. The supporting structure comprises a supporting seat, wherein the supporting seat comprises a laminated plate and an accommodating cavity, and the laminated plate comprises 1 fixed plate and 1-2 sliding plates; the flexible guide layer is accommodated in each accommodating cavity and is connected with at least one longitudinal side edge of the fixing plate; the driving piece comprises an output shaft which is fixedly arranged on the supporting seat and is connected with one transverse side edge of each sliding plate. When the 1-2 sliding plates slide towards the direction far away from the fixed plate, at least one part of the flexible guide layers are driven out of the accommodating cavity and cover the sliding plate surfaces, and the thickness of each flexible guide layer is adaptive to the height difference between the sliding plate and the fixed plate, so that one side surface of each flexible guide layer on the 1-2 sliding plates and one side surface of the fixed plate are in the same plane. The flexible display device comprises the sliding plate type supporting structure and a flexible display screen stacked on the sliding plate type supporting structure.

Description

Slide plate type supporting structure and flexible display device

Technical Field

The application relates to the technical field of electronic products, in particular to a sliding plate type supporting structure and a flexible display device.

Background

With the rapid development of scientific technology, the current flexible screen can be made to have a thickness of 0.1 mm to 0.66 mm, and a folding radius of 1 mm, for example, a precision spring can have a wire diameter of 0.15 mm, a radius of 0.5 mm, and the like, which will play a great role in electronic devices including portable mobile terminals and the like.

Compared with the conventional screen, the flexible display device has the characteristics of better flexibility, light weight, flexibility, folding property and the like, so that the flexible display device can be manufactured into various shapes. However, it was found that at least the following problems exist: due to the flexible rolling of the flexible screen, the flexible screen is easy to warp or sink and has poor flatness; the supporting structure of part design cooperation flexible screen is used for less part, and then makes to press the support inadequately, leads to pressing to have the blind area, touch sensitivity is poor.

SUMMERY OF THE UTILITY MODEL

The sliding plate type supporting structure and the flexible display device designed and developed by the application at least solve one of the problems, and the implementation mode adopts the following technical scheme:

in a first aspect, an embodiment of the present application provides a sliding plate type supporting structure, for bearing a flexible display screen, including:

the supporting seat comprises a laminated plate and an accommodating cavity, the laminated plate comprises 1 fixed plate and 1-2 sliding plates laminated below the fixed plate, the accommodating cavity is provided with an opening and is connected with the sliding plates, and the sliding plates can slide relative to the fixed plate to generate displacement;

the flexible guide layers are accommodated in the accommodating cavities, output through the corresponding openings and fixedly connected with at least one longitudinal side edge of the fixed plate, and the length of each flexible guide layer is greater than the displacement of each sliding plate;

the driving pieces comprise output shafts, each driving piece is fixedly arranged on the supporting seat and is connected with one transverse side edge of each sliding plate, and the driving pieces are used for driving the sliding plates to slide so as to control the opening and closing of the flexible guide layer;

when the 1-2 sliding plates slide in the direction far away from the fixed plate, at least a part of the flexible guide layers are driven out of the accommodating cavity and cover the sliding plate surfaces, and the thickness of each flexible guide layer is respectively matched with the height difference between the sliding plate and the fixed plate, so that one side surface of each flexible guide layer on the 1-2 sliding plates and one side surface of the fixed plate are in the same plane.

In some embodiments, the supporting seat is further provided with 1-2 pairs of transverse sliding rails, and a set of opposite sides of each of the 1-2 sliding plates are slidably disposed on 1-2 pairs of transverse sliding rails respectively.

In some embodiments, the accommodating cavity is an internal winding type cylindrical cavity or an internal sliding groove type strip-shaped cavity.

In some embodiments, when the slide groove type strip-shaped cavity is used, the cross section of the cavity is in a transverse J shape or a transverse P shape covered with a rotating shaft.

In some embodiments, the cross-sectional shape of the sliding plate comprises an "L" shape, the short side of the "L" shape being configured as a rack, the output shaft comprising a gear, the rack being in engagement with the gear, and the drive member comprising an electric motor.

In some embodiments, the flexible guide layer comprises any one of a hinge guide layer, a tape guide layer, and a spring guide layer within a safe deformation threshold range of the supported object.

In some embodiments, the spring guide layer comprises a plurality of springs wound side by side and a cloth covering the springs, wherein the cloth is penetrated by each layer strip or part of the layer strips of each spring and is connected with the fixing plate in an extending manner.

In some embodiments, the spring guide layer includes a plurality of springs wound side by side and a metal sheet covering the springs, the metal sheet is mechanically fixed or glued with soft glue on one side of the plurality of springs, and is connected with the fixing plate in an extending mode.

In a second aspect, an embodiment of the present application further provides a flexible display device, including any one of the above-mentioned sliding plate type supporting structures and a flexible display screen, where the flexible display screen is laid on the same side surface of the flexible guiding layer and the fixing plate, which are fixedly connected together.

In some embodiments, the laying means includes a soft glue connection means, and the flexible display screen includes a touch flexible display screen.

One of the above technical solutions has the following advantages: because the guide mode of the laminated flexible guide layers and the structural mode that the height difference between the adaptation plates is in the same plane are adopted, the problem of tilting or sinking caused by moving and laying independent flexible screens is solved, and the technical effects of protecting the flexible screens, ensuring that the flexible screens have better flatness and better display effect are achieved; because the laminated plate is a flat solid plate, the overall support degree is better, and the technical effects of no pressing blind area and sensitive touch are better achieved.

Drawings

Fig. 1 is a schematic structural diagram of a flexible display device according to an exemplary embodiment of the present disclosure when two sliding plates are stacked.

Fig. 2 is a schematic structural diagram of a flexible display device according to an exemplary embodiment of the present disclosure when two sliding plates are unfolded.

Fig. 3 is a cross-sectional view of a portion of the structure at a-a in fig. 1.

Fig. 4 is a sectional view of a portion of the structure at B-B in fig. 2.

Fig. 5 is a cross-sectional view of a portion of the structure at C-C in fig. 2.

Fig. 6 is a plan view of the structure of fig. 2.

Fig. 7 is a schematic cross-sectional view of a spring guide layer of a flexible display device according to an exemplary embodiment of the present application.

Fig. 8 is a schematic structural diagram of a flexible display device according to an exemplary embodiment of the present application, in which a receiving chamber is connected to a sliding plate.

Fig. 9 is a schematic structural diagram of a single sliding panel of another flexible display device according to an exemplary embodiment of the present application when unfolded.

Fig. 10 is a schematic structural view of a dual slider stack of still another flexible display device according to an exemplary embodiment of the present application.

Fig. 11 is a schematic structural view of a flexible display device according to an exemplary embodiment of the present application when two sliding plates are unfolded.

Detailed Description

The technical solutions in the exemplary embodiments of the present application will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present application, and it is obvious that the described exemplary embodiments are only a part of the 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.

In the description of the present application, it is to be specifically understood that the terms "longitudinal" and "transverse", "length" and "width" are merely relative terms, that "longitudinal" and "transverse" may also be "transverse", and that "transverse" and "longitudinal", indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and that "length" and "width" should be understood as limiting the present application. Furthermore, the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1 to 6 together, a flexible display device 100 provided by an exemplary embodiment of the present application includes a sliding plate type support structure 2, the sliding plate type support structure 2 is used for carrying a flexible display screen 1, and the flexible display screen 1 may include a touch flexible display screen 10 therein, so that the size of the touch flexible display screen 10 is kept unchanged during the stacking and unfolding processes, thereby preventing the touch flexible display screen 10 from being jacked up or squeezed.

The slide support structure 2 comprises a support base 20, a flexible guide layer and an actuation element 40. The supporting seat 20 comprises a laminated plate and an accommodating cavity, the laminated plate comprises 1 fixed plate 23 and 1-2 sliding plates laminated below the fixed plate 23, the accommodating cavity is provided with corresponding openings and is connected with the sliding plates, and the sliding plates can slide relative to the fixed plate 23 to generate displacement; the flexible guide layers are accommodated in the accommodating cavities, output through the openings and fixedly connected with at least one longitudinal side edge of the fixed plate 23, and the length of each flexible guide layer is greater than the displacement of each sliding plate; the driving members 40 comprise output shafts, each driving member 40 is fixedly arranged on the supporting seat 20, is connected with one transverse side edge of each sliding plate, and is used for driving the sliding plates to slide so as to control the opening and closing of the flexible guide layer; when the 1-2 sliding plates slide in the direction away from the fixed plate 23, at least a part of the flexible guide layers are driven to move out of the accommodating cavity and cover the sliding plate surfaces, and the thickness of each flexible guide layer is respectively adapted to the height difference between the sliding plate and the fixed plate 23, so that one side surface of each flexible guide layer on the 1-2 sliding plates and one side surface of the fixed plate 23 are in the same plane.

In this embodiment, the sliding plates include a first sliding plate 21 and a second sliding plate 22 stacked thereunder, preferably, the sliding directions of the first sliding plate 21 and the second sliding plate 22 are opposite during the unfolding or closing process of the device; the first sliding plate 21 is connected to the first accommodating cavity 24, the first accommodating cavity 24 is provided with a first opening 241, the second sliding plate 22 is connected to the second accommodating cavity 25, the second accommodating cavity 25 is provided with a second opening 252, and the volumes of the first accommodating cavity 24 and the second accommodating cavity 25 are not equal; the first sliding plate 21 is covered with a first flexible guide layer 31, and the second sliding plate 22 is covered with a second flexible guide layer 32; the first flexible guide layer 31 and the second flexible guide layer 32 have unequal thicknesses.

When the fixed plate 23 and the sliding plate are in a stacked state, one side of the first flexible guiding layer 31 is fixedly connected with one side of the fixed plate 23, the first flexible guiding layer 31 is accommodated in the first accommodating cavity 24, one side of the second flexible guiding layer 32 is fixedly connected with the other side of the fixed plate 23, and the second flexible guiding layer 32 is accommodated in the second accommodating cavity 25; one display area of the touch flexible display screen 10 may be, but is not limited to, fixedly connected to the surface area of the fixing plate 23, and the other display area of the touch flexible display screen 10 is attached to the first flexible guiding layer 31 and the second flexible guiding layer 32. When the sliding plates are unfolded, one driving member 40 drives the first sliding plate 21 to drive the first accommodating cavity 24 to slide in a direction away from the fixed plate 23, and the other driving member 40 drives the second sliding plate 22 to drive the second accommodating cavity 25 to slide in a direction away from the fixed plate 23, and preferably, the sliding direction of the first sliding plate 21 is opposite to that of the second sliding plate 22; the first flexible guiding layer 31 slides from the inside of the first accommodating cavity 24 to the surface of the first sliding plate 21 through the first opening 241, and the second flexible guiding layer 32 slides from the inside of the second accommodating cavity 25 to the surface of the second sliding plate 22 through the second opening 252; since the thickness of the first flexible guide layer 31 is adapted to the height difference between the first sliding plate 21 and the fixed plate 23, and the thickness of the second flexible guide layer 32 is adapted to the height difference between the second sliding plate 22 and the fixed plate 23, one side surface of the first flexible guide layer 31, one side surface of the second flexible guide layer 32 and one side surface of the fixed plate 23 are in the same plane, so that the touch flexible display screen 10 attached thereon can be displayed on the same plane. The closing process is the same reversible process as described above, and is not described herein again.

Because it is corresponding flexible guide layer with fixed plate 23 fixed connection is on one side is planar articulamentum the in-process of slide plate stack and expansion, the length of articulamentum in the direction of sliding keeps the definite value unchangeable, touch flexible display screen 10 quilt all the time flexible guide layer supports to paste and covers and guide, consequently can avoid touch flexible display screen 10 takes place to stick up or sunken problem, in other words, slide plate formula bearing structure 2 can protect touch flexible display screen 10 is not damaged at range upon range of and the in-process that expands, and makes its roughness better. Because the laminated plate is a flat solid plate, the overall support degree is better, and the technical effects of no pressing blind area and sensitive touch can be better achieved.

Referring to fig. 3 to 5, as an alternative embodiment, the support base 20 is further provided with 1 to 2 pairs of transverse slide rails, and a set of opposite sides of 1 to 2 sliding plates are respectively slidably disposed on 1 to 2 pairs of transverse slide rails. It can be understood that the opposite sides of the first sliding plate 21 slide on a pair of first sliding rails 51, and the opposite sides of the second sliding plate 22 slide on a pair of second sliding rails 52, respectively, and the sliding rails are added to facilitate the sliding of the sliding plates and the precise positioning during the sliding, so as to maintain the stability of the flexible guiding layer and the fixed plate 23 in the same plane. The sliding action of the sliding plate is smooth and soft, which is beneficial to reducing the probability of damage to the touch flexible display screen 10.

Further, referring to fig. 8 to 11, as an alternative embodiment, the accommodating cavity is an internal sliding groove type strip cavity 24 (also including a strip cavity with a rotating shaft 53) or an internal winding type cylindrical cavity 261. It is understood that the strip-shaped cavity 24 and the cylindrical cavity 261 can better hide and protect the flexible display screen 1, which goes without saying. When the flexible display screen is a cylindrical cavity 261, the flexible guide layer and the attached flexible display screen 1 are accommodated in the cylindrical cavity 261 in a winding manner, and when the flexible display screen is a strip-shaped cavity 24, the flexible guide layer and the attached flexible display screen 1 slide in the strip-shaped cavity 24 with a sliding groove type inside.

Further, referring to fig. 3 to 4 and fig. 8 to 9, as an alternative embodiment, when the cavity is a slide-groove-shaped strip-shaped cavity, the cross-sectional shape of the cavity is a transverse J-shape or a transverse P-shape wrapped with a rotating shaft 53. The J-shape or the P-shape is only for convenience of describing a shape and simplifying description, and does not specify or imply a specific configuration thereof, and thus cannot be construed as limiting the present application.

Specifically, referring to fig. 3 to 5 and 8, the first opening 241 of the J-shaped first accommodating cavity 24 is connected to the longitudinal side of the first sliding plate 21, and the length of the sliding plate is greater than that of the accommodating cavity, so as to facilitate the opposite sides of the first sliding plate 21 to slide on the pair of first sliding rails 51 penetrating into the supporting seat 20. In order to reduce the height difference between the second sliding plate 22 connected to the J-shaped second accommodation chamber 25 and the fixed plate 23, it is preferable to provide a sliding space between the first sliding plate 21 and the J-shaped first accommodation chamber 24 connected thereto for allowing the second sliding plate 22 to slide, and the J-shaped second accommodation chamber 25 connected to the second sliding plate 22 is disposed below the J-shaped first accommodation chamber 24. For structural stability, one lateral side of the J-shaped first accommodation cavity 24 is extended to a position corresponding to one lateral side of the first sliding plate 21 and is fixedly connected with the first accommodation cavity into a whole; similarly, one lateral side of the J-shaped second accommodating cavity 25 extends to a corresponding lateral side of the second sliding plate 22 and is fixedly connected with the same, and the extending side of the first accommodating cavity 24 and the extending side of the second accommodating cavity 25 are opposite. The structure of the first receiving cavity 24 connected to the first sliding plate 21 is the same as the structure of the second receiving cavity 25 connected to the second sliding plate 22, and this penetrating structure is beneficial to reduce the thickness difference between the first flexible guiding layer 31 and the second flexible guiding layer 32, and is beneficial to the first sliding plate 21 and the second sliding plate 22 to slide more smoothly, and the flexible display screen 1 is better protected.

For example, as shown in fig. 9, in a single sliding plate unfolding structure of another flexible display device, the first accommodating cavity is preferably a P-shaped cavity wrapped with a rotating shaft 53, and the horizontal P-shaped cavity may include two forms, the first form is a horizontal P-shaped form in which the rotating shaft 53 is on the upper portion of the strip-shaped cavity, that is, the strip-shaped cavity is approximately parallel to the first sliding plate and has a certain distance to the first sliding plate. The first sliding plate slides along the direction far away from the fixed plate, the first flexible guiding layer partially covers the rotating shaft 53, the first accommodating cavity in a P shape slides towards the surface of the first sliding plate through the first opening 241, and the first accommodating cavity in a P shape is driven to move far away from the fixed plate, namely, the first accommodating cavity is pulled out of the supporting seat. During the unfolding process of the first sliding plate, although the first sliding plate is mostly pulled out of the device, the touch flexible display screen 10 is always protected due to the following movement of the P-shaped first accommodating cavity. The rotating shaft 53 is added to assist the sliding to change into partial rolling, so that the sliding is smoother, and the curvature radius of the sliding bending part is increased, so that the service life of the touch flexible display screen 10 is further prolonged. In other embodiments, the second form is a horizontal P-shaped form in which the rotating shaft is located at the lower portion of the strip-shaped cavity, that is, the strip-shaped cavity is attached to the back of the first sliding plate, and the principle is similar to the first form, and reference is made to the first form, which is not described again.

Further, referring to fig. 5 to 6 together, as an alternative embodiment, the cross-sectional shape of the sliding plate includes an "L" shape, short sides of the "L" shape are configured as racks, the output shaft includes a gear, the racks are engaged with the gear, and the driving member 40 includes a motor. It will be appreciated that the drive member 40 includes, but is not limited to, the electric motor, for example, a power source other than an electric motor may be used, and a power transmission device other than a rack or pinion may be used. When the first sliding plate 21 is driven to slide by the engagement of the first gear 411 of the first motor 41 and the first rack gear 211 of the first sliding plate 21, one end display region of the flexible display screen 1 is displayed on the first flexible guide layer 31, and when the second sliding plate 22 is driven to slide by the engagement of the second gear 422 of the second motor 42 and the second rack gear 222 of the second sliding plate 22, the opposite end display region of the touch flexible display screen 10 is displayed on the second flexible guide layer 32, so that the whole piece of the flexible display screen 1 is displayed in the same plane. The change of the rotation direction of the motor controls the opening and closing state of the flexible display screen, the electric drive is more stable than manual drive and can be controlled randomly the gear rotation amount can control the sliding rule, and the touch flexible display screen 10 is further protected and the automatic opening and closing super-comfortable experience is obtained.

Further, referring to fig. 3, 4 and 7, as an alternative embodiment, the flexible guiding layer includes any one of a hinge guiding layer (not shown), a tape guiding layer (not shown) and a spring guiding layer within a safe deformation threshold range of the supported object.

The spring guide layer comprises a plurality of springs which are wound side by side and cloth 331 covering the springs, and the cloth 331 is penetrated by each layer strip or part of the layer strips of each spring and is preferably extended to cover and connect the fixing plate 23.

In detail, the flexible guide layer comprises but is not limited to a hinge guide layer, a cloth belt guide layer and a spring guide layer, wherein the hinge guide layer is formed by connecting inverted trapezoid units and is adapted to slide along a bent arc surface; the cloth belt guide layer comprises an elastic cloth layer which is not easy to stretch and deform; the cloth 331 of the spring guiding layer includes but is not limited to an extremely thin elastic flexible cloth, the diameter of the spring is small, for example, a precision spring on the market can achieve the dimensions of 0.15 mm wire diameter and 0.5 mm radius, and then the thickness of the formed flexible guiding layer is thin, and the same flatness is high. The first flexible guide layer 31 is an integrated structure formed by a plurality of first springs 311 wound side by side and cloth 331 covering the first springs, the second flexible guide layer 32 is an integrated structure formed by a plurality of second springs 322 wound side by side and cloth 331 covering the second springs, the first flexible guide layer 31 and the second flexible guide layer 32 are respectively and fixedly connected to opposite two sides of the fixing plate 23, and the diameters of the first springs 311 and the second springs 322 are not equal. When the adjacent springs intersect at two points, the adjacent first springs 311 may be close to or far from each other, and the adjacent second springs 322 may also be close to or far from each other; when the adjacent springs meet at a point, the adjacent first springs 311 may be close to each other, and the adjacent second springs 322 may also be close to each other; the side-by-side winding-through spring layer with variable volume is penetrated to a connecting surface by the cloth 331 with a certain length, when the sliding plate slides in a bending way at the side edge, the adjacent springs of the spring layer approach each other and slide to form a supporting inner arc surface, and because the length of the cloth 331 in the sliding direction is constant, the flexible display screen supporting the flexible display screen including but not limited to gluing keeps constant length, the problem of tilting or sinking of the flexible display screen is preferably avoided.

Referring to fig. 7, as an alternative embodiment, the spring guiding layer includes a plurality of springs wound side by side and a metal sheet 341 covering the springs, and the metal sheet 341 is attached to one side of the plurality of springs by mechanical fixing or by soft glue, and is preferably extended to cover and connect with the fixing plate. It is understood that the metal sheet 341 includes but is not limited to an ultra-thin steel sheet, and the principle and implementation of the spring guiding layer of the metal sheet 341 are similar to those of the cloth 331, and will not be described herein again.

As shown in fig. 1, 2, 6, and 9 to 11, the flexible display screen 1 is laid on the same side of the sliding support structure 2 where the flexible guide layer and the fixing plate are fixedly connected.

The laying mode includes but is not limited to a soft glue connection mode, and the flexible display screen 1 includes but is not limited to a touch flexible display screen 10.

The flexible display device 100 is installed on an openable and closable electronic product, which includes but is not limited to a mobile phone, a notebook, a tablet computer, a vehicle-mounted computer, a camera, an all-in-one computer, a television, an advertisement machine, a medical instrument display screen, a robot display screen, and the like.

While the application has been described above with reference to certain embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, as long as there is no structural conflict, the various features of the various embodiments disclosed herein can be used in any combination with one another, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the present application not be limited to the particular embodiments disclosed, but that the present application includes all embodiments falling within the scope of the appended claims.

Claims

1. A slide support structure, comprising:

2. The sliding plate type supporting structure of claim 1, wherein the supporting seat further comprises 1-2 pairs of transverse sliding rails, and 1-2 pairs of transverse sliding rails are slidably disposed on 1-2 pairs of respective pairs of opposite sides of the sliding plate.

3. The sliding plate type supporting structure of claim 1, wherein the accommodating cavity is a cylindrical cavity of an internal winding type or a strip-shaped cavity of an internal sliding groove type.

4. The sliding plate type supporting structure of claim 3, wherein when the sliding plate type strip-shaped cavity is a sliding groove type, the cross section of the cavity is in a transverse J shape or a transverse P shape covered with a rotating shaft.

5. The slide plate type support structure according to claim 2, wherein the cross-sectional shape of the slide plate includes an "L" shape, short sides of the "L" shape are configured as racks, the output shaft includes a gear, the racks are engaged with the gear, and the driving member includes a motor.

6. The slide support structure according to any one of claims 1 to 5, wherein the flexible guide layer comprises any one of a hinge guide layer, a tape guide layer and a spring guide layer within a safe deformation threshold range of the supported object.

7. The slide support structure according to claim 6, wherein the spring guide layer comprises a plurality of springs wound side by side and cloth covering the springs, the cloth is penetrated by each layer or part of the layer of each spring and is extended to cover and connect the fixing plate.

8. The slide support structure according to claim 6, wherein said spring guide layer comprises a plurality of springs wound side by side and a metal plate covering the springs, said metal plate being attached to one side of said plurality of springs by mechanical fastening or by soft adhesive, and extending to cover and connect said anchor plate.

9. A flexible display device, comprising the slide plate type support structure of any one of claims 1 to 8 and a flexible display screen, wherein the flexible display screen is laid on the same side surface of the flexible guide layer and the fixed plate which are fixedly connected together.

10. The flexible display device according to claim 9, wherein the laying method comprises a soft adhesive bonding method, and the flexible display screen comprises a touch flexible display screen.