CN117037618A

CN117037618A - Winding structure of flexible screen and curling display device

Info

Publication number: CN117037618A
Application number: CN202311094755.8A
Authority: CN
Inventors: 杨艳艳; 祝尚杰; 周鹏飞; 王新宇
Original assignee: BOE Technology Group Co Ltd
Current assignee: BOE Technology Group Co Ltd
Priority date: 2023-08-28
Filing date: 2023-08-28
Publication date: 2023-11-10

Abstract

The application provides a winding structure of a flexible screen and a curled display device, wherein the winding structure of the flexible screen comprises: the storage part comprises a shell, an opening formed in one side of the shell, and a flexible screen rolling shaft and a support piece rolling shaft which are arranged in the shell, wherein the support piece rolling shaft is positioned between the flexible screen rolling shaft and the opening; a blocking part arranged outside the shell; the flexible screen winding shaft is used for being connected with one end of the flexible screen and being wound by the flexible screen, the supporting piece winding shaft is used for being connected with one end of the supporting piece and being wound by the supporting piece, the opening is used for penetrating the flexible screen and the supporting piece, and the blocking part is used for being fixedly connected with the other end of the flexible screen and the other end of the supporting piece.

Description

Winding structure of flexible screen and curling display device

Technical Field

The application relates to the technical field of display, in particular to a winding structure of a flexible screen and a curled display device.

Background

With the vigorous development of the flexible display industry, the desire of flexible display products is higher and higher, and the demands for the improvement of the integration (various display sizes) and portability of the display products are increasing.

Compared with the traditional display screen, the flexible display screen has the advantages of low power consumption, small volume, excellent image quality, flexible display and the like, and the flexible display can be applied to the movable display device to definitely further improve the user experience, so that the structure of the flexible display device is reasonably designed, the device can realize multiple display states of a large screen and a small screen simultaneously, and the flexible display screen has portability, and is one of the problems that the flexible display needs to be researched at present.

Disclosure of Invention

The application provides a winding structure of a flexible screen and a curled display device, which are used for winding the flexible screen.

In a first aspect, an embodiment of the present application provides a winding structure of a flexible screen, including:

the storage part comprises a shell, an opening formed in one side of the shell, and a flexible screen rolling shaft and a support piece rolling shaft which are arranged in the shell, wherein the support piece rolling shaft is positioned between the flexible screen rolling shaft and the opening;

a blocking part arranged outside the shell;

the flexible screen winding shaft is used for being connected with one end of the flexible screen and being wound by the flexible screen, the supporting piece winding shaft is used for being connected with one end of the supporting piece and being wound by the supporting piece, the opening is used for penetrating the flexible screen and the supporting piece, and the blocking part is used for being fixedly connected with the other end of the flexible screen and the other end of the supporting piece.

In one possible implementation, the housing further comprises two constant torque springs, the constant torque springs comprising an output spool and a storage spool;

one end of the flexible screen rolling shaft is fixedly connected with an output spool of one constant torque spring, and the other end of the flexible screen rolling shaft is movably connected with a storage spool of the other constant torque spring;

one end of the support piece rolling shaft is fixedly connected with the output spool of the other constant torque spring, and the other end of the support piece rolling shaft is movably connected with the storage spool of the one constant torque spring.

In one possible implementation, each constant torque spring further includes a metal spring piece, one end of which is fixedly connected to the corresponding output spool, and the other end of which is connected to the corresponding storage spool and is windable by the corresponding storage spool.

In one possible implementation manner, the accommodating portion further includes a first ball bearing and a fixed shaft, the first ball bearing and the fixed shaft are disposed on each storage spool of the constant torque spring and sequentially close to the corresponding winding shaft, the first ball bearing is embedded in the corresponding storage spool, one end of the fixed shaft is embedded in the first ball bearing, and the other end of the fixed shaft is embedded in the corresponding winding shaft.

In one possible implementation manner, the accommodating portion further includes a second ball bearing disposed on a side of each spool of each constant torque spring, which is away from the corresponding winding shaft, and a positioning pin embedded in the second ball bearing, and the positioning pin is fixedly connected with the housing.

In one possible implementation, the accommodating portion further includes a support roller disposed on a side of the support winding shaft near the opening.

In one possible implementation, the supporting roller comprises a plurality of sub-supporting wheels which are arranged independently of each other along the extending direction parallel to the winding shaft of the supporting piece, and the rotation of each sub-supporting wheel is not affected.

In one possible implementation, the radius of the support take-up reel is smaller than the radius of the flexible screen take-up reel and larger than the radius of the support roller.

In one possible implementation, the distance between the rotation axis of the support rolling shaft and the bottom surface of the housing is greater than the distance between the rotation axis of the flexible screen rolling shaft and the bottom surface and less than the distance between the rotation axis of the support roller and the bottom surface.

In a second aspect, an embodiment of the present application further provides a curled display device, including:

the flexible screen, set up at the support piece that deviates from the display surface of flexible screen, and as above arbitrary winding structure, the flexible screen pass in the winding structure the opening with flexible screen winding hub connection, support piece passes in the winding structure the opening with support piece winding hub connection.

The beneficial effects of the application are as follows:

the embodiment of the application provides a winding structure of a flexible screen and a curling display device, wherein a housing, an opening formed in one side of the housing, a flexible screen winding shaft and a support piece winding shaft are arranged in the housing, the flexible screen winding shaft is used for being connected with one end of the flexible screen and can be wound by the flexible screen, the support piece winding shaft is used for being connected with one end of a support piece and can be wound by the support piece, and the opening is used for penetrating the flexible screen and the support piece. In this way, the flexible screen can be rolled up through the support piece rolling shaft, and the support piece rolling shaft can be used for rolling up the support piece, so that the flatness of the flexible screen in the rolling process is ensured, and the service performance of the flexible screen is improved.

Drawings

FIG. 1 is a perspective view of a winding structure of a flexible screen according to an embodiment of the present application;

FIG. 2 is another perspective view of a winding structure of a flexible screen according to an embodiment of the present application;

fig. 3 is a schematic cross-sectional structure of a receiving portion in a winding structure of a flexible screen according to an embodiment of the present application;

FIG. 4 is a perspective view of two constant torque springs of the receiving portion of FIG. 3;

FIG. 5 is a perspective view of each constant torque spring of FIG. 4;

FIG. 6 is an exploded view of region Q of FIG. 3;

FIG. 7 is an exploded view of one of the neutron support wheels of FIG. 3;

FIG. 8 illustrates one of the attachment means between the support wheel and the housing of FIG. 3;

FIG. 9 is a schematic cross-sectional view of one of the directions indicated by NN in FIG. 2;

fig. 10 is a schematic structural view of a bracket structure in an unfolded state in a curled display device according to an embodiment of the present application;

fig. 11 is a schematic structural view of a bracket structure in a closed state in a curled display device according to an embodiment of the present application.

Reference numerals illustrate:

10-a storage part; 100-a housing; 11-opening; 200-a flexible screen take-up reel; 300-a support take-up spool; 20-a barrier; 30-a flexible screen; 40-supporting member; 50-drawing structure; 60-scaffold structure; 400-constant torque spring; 401-1-output spool; 401-2-storage spools; 401-3-metal spring plate; 402-a first ball bearing; 403-fixed shaft; 404-a second ball bearing; 405-positioning a pin shaft; 500-supporting rollers; 510-sub-support wheels; 501-a roller; 502-a third ball bearing; 503-limiting columns; 110-a first fixing portion; 120-semicircular grooves; 130-a second fixing portion; 140-a threaded hole; 70-a flexible display; 80-a support layer; 600-backing film; 700-pressure sensitive adhesive; 800-a filter layer; 900-optically clear adhesive; 910-cover plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present application. It will be apparent that the described embodiments are some, but not all, embodiments of the application. And embodiments of the application and features of the embodiments may be combined with each other without conflict. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present application fall within the protection scope of the present application.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "inner", "outer", "upper", "lower", etc. are used merely to denote relative positional relationships, which may also change accordingly when the absolute position of the object to be described changes.

It should be noted that the dimensions and shapes of the figures in the drawings do not reflect true proportions, and are intended to illustrate the present application only. And the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

In the related art, a scroll torsion spring is often adopted to carry out curling design on the whole machine of the flexible screen, and as the number of winding turns increases, the torsion gradually increases, and finally the problem that the tension required by the whole machine is pulled and the tension born by the screen in a pulled state is overlarge is caused.

In view of the above, the embodiment of the application provides a winding structure of a flexible screen and a curled display device, which are used for winding the flexible screen.

Fig. 1 to 3 show a perspective view of a winding structure of a flexible screen according to an embodiment of the present application, fig. 2 is another perspective view of the winding structure, and fig. 3 is a schematic cross-sectional view of a receiving portion 10 in the winding structure. Specifically, the winding structure includes:

a housing part 10, wherein the housing part 10 comprises a housing 100, an opening 11 formed at one side of the housing 100, and a flexible screen winding shaft 200 and a support winding shaft 300 which are arranged in the housing 100, and the support winding shaft 300 is positioned between the flexible screen winding shaft 200 and the opening 11;

a blocking part 20 provided outside the housing 100;

the flexible screen winding shaft 200 is used for being connected with one end of the flexible screen 30 and being capable of being wound by the flexible screen, the support piece winding shaft 300 is used for being connected with one end of the support piece 40 and being capable of being wound by the support piece, the opening 11 is used for penetrating the flexible screen 30 and the support piece 40, and the blocking portion 20 is used for being fixedly connected with the other end of the flexible screen 30 and the other end of the support piece 40.

In an implementation, when the flexible screen needs to be stored, the flexible screen 30 may be wound on the flexible screen winding shaft 200, and at the same time, the support 40 for supporting the flexible screen 30 may be wound on the support winding shaft 300. Further, the blocking portion 20 can restrict the other end of the flexible screen 30 from also being received in the receiving portion 10. When the flexible screen 30 needs to be flattened, the blocking portion 20 can be applied to a direction away from the storage portion 10, so that the flexible screen 30 is unreeled from the flexible screen reel 200, and meanwhile, the supporting member 40 is unreeled from the supporting member reel 300, so that the flexible screen 30 and the supporting member 40 can be effectively flattened, and the usability of the flexible screen 30 is ensured while the supporting member 40 effectively supports the flexible screen 30. It should be noted that, as still referring to fig. 1 and 2, the winding structure further includes a drawing structure 50 disposed with the housing 100, and a bracket structure 60 (not shown) disposed on a side of the support member 40 away from the flexible screen 30; the bracket structure 60 is used to enhance the support performance of the machine, and the drawer structure 50 assists in supporting. The support structure 60 may be, for example, an organ support structure, the details of which are described in the relevant section below. Fig. 1 is a schematic structural view of the drawing structure 50 and the bracket structure 60 in a closed state, and fig. 2 is a schematic structural view of the drawing structure 50 and the bracket structure 60 in a flattened state.

In the embodiment of the present application, as shown in fig. 4, the housing part 10 further includes two constant torque springs 400, and the constant torque springs 400 include an output spool 401-1 and a storage spool 401-2;

one end of the flexible screen winding shaft 200 is fixedly connected with an output spool 401-1 of one constant torque spring 400, and the other end of the flexible screen winding shaft 200 is movably connected with a storage spool 401-2 of the other constant torque spring 400;

one end of the support rolling shaft 300 is fixedly connected with the output spool 401-1 of the other constant torque spring 400, and the other end of the support rolling shaft 300 is movably connected with the storage spool 401-2 of the one constant torque spring 400.

In the specific implementation process, one end of the flexible screen winding shaft 200 is fixedly connected with the output spool 401-1 of the constant torque spring 400, so that the flexible screen winding shaft 200 and the output spool 401-1 of the constant torque spring 400 can rotate synchronously. Moreover, the other end of the flexible screen winding shaft 200 is movably connected with the storage spool 401-2 of the other constant torque spring 400, so that the flexible screen winding shaft 200 and the storage spool 401-2 of the other constant torque spring 400 can rotate relatively, and the flexible screen 30 can be wound by the flexible screen winding shaft 200 conveniently. In addition, one end of the support winding shaft 300 is fixedly connected to the output spool 401-1 of the other constant torque spring 400, so that the support winding shaft 300 and the output spool 401-1 of the other constant torque spring 400 can be rotated in synchronization. Moreover, the other end of the support winding shaft 300 is movably connected with the storage spool 401-2 of the above-mentioned one constant torque spring 400, so that the support winding shaft 300 and the storage spool 401-2 of the above-mentioned one constant torque spring 400 can rotate relatively, thereby facilitating the subsequent winding of the support by the support winding shaft 300. In the exemplary embodiment shown in fig. 4, reference numeral 400-1 designates a constant torque spring providing a winding force for the flexible screen, and reference numeral 400-2 designates a constant torque spring providing a winding force for the support 40. In practical application, because the constant torsion can be provided for the winding of the flexible screen 30 and the supporting piece 40 through the two constant torsion springs 400 in the winding process, the torsion cannot be changed due to the increase of the number of revolution, so that the problem of overlarge torsion of the whole machine is avoided, the service performance of the winding structure is improved, and the beneficial guarantee is provided for the subsequent winding of the flexible screen 30 and the supporting piece 40.

The following explains the movement of the accommodating portion 10 in the process of unfolding the winding structure in the embodiment of the present application with reference to fig. 4. In position (1), the flexible screen take-up spool 200 is fixed to the output spool of the constant torque spring 400-1 that provides the take-up force for the flexible screen 30, and moves synchronously; in position (2), the flexible take-up spool 200 is not fixed to the storage spool of the constant torque spring 400-2 providing the take-up force to the support 40, and can be rotated relatively; in position (3), the support take-up spool 300 is not fixed to the storage spool of the constant torque spring 400-1 that provides the take-up force to the flexible screen 30, and can rotate relatively; in position (4), the support takeup shaft 300 is fixed and rotated in synchronization with the output spool of the constant torque spring 400-2 that provides the takeup force to the support 40. In this way, the subsequent rolling structure is ensured to roll the flexible screen 30 and the supporting member 40 in the flattening and rolling process of the whole machine.

In the embodiment of the present application, as shown in fig. 5, each constant torque spring 400 further includes a metal elastic sheet 401-3, where one end of the metal elastic sheet 401-3 is fixedly connected to the corresponding output spool 401-1, and the other end is connected to the corresponding storage spool 401-2 and can be wound by the corresponding storage spool 401-2.

In an embodiment of the present application, an exploded view of one of the areas Q of fig. 3 is shown in fig. 6, wherein reference numeral 401 designates a single constant torque torsion spring. Specifically, the housing part 10 further includes a first ball bearing 402 and a fixed shaft 403 disposed on the storage spool 401-2 of each constant torque spring 400, which are sequentially adjacent to the corresponding winding shaft, the first ball bearing 402 is embedded in the corresponding storage spool 401-2, one end of the fixed shaft 403 is embedded in the first ball bearing 402, and the other end of the fixed shaft 403 is embedded in the corresponding winding shaft.

In a specific implementation, one end of the fixed shaft 403 may be embedded in the inner diameter of the first ball bearing 402, and the other end of the fixed shaft 403 may be embedded in a corresponding winding shaft, and the corresponding winding shaft may be connected to the first ball bearing 402 through the fixed shaft 403. One end of the first ball bearing 402 may be inserted into the storage spool 401-2 of the corresponding constant torque spring 400, and may be disposed at a position where relative rotation may occur, thereby reducing rotational friction.

In an embodiment of the present application, still referring to fig. 6, the housing portion 10 further includes a second ball bearing 404 disposed on a side of each spool of each constant torque spring 400 facing away from the corresponding winding shaft, and a positioning pin 405 embedded in the second ball bearing 404, where the positioning pin 405 is fixedly connected to the housing 100.

In the specific implementation, the rotatable characteristic of the storage spool 401-2 is ensured by the first ball bearing 402 and the second ball spool provided on the storage spool 401-2 of each constant torque spring 400, which makes it possible to wind up the flexible screen 30 and wind up the support member 40. In addition, a positioning pin 405 embedded in the second ball bearing 404 is fixedly connected to the housing 100, and illustratively, the positioning pin 405 is fixed to a side wall of the housing of the complete machine, thereby providing axial positioning for the spools of each constant torque spring 400, and each spool is self-rotatable on the positioning pin 405. In the embodiment of the present application, as shown in fig. 3, the accommodating portion 10 further includes a supporting roller 500 disposed on a side of the supporting member winding shaft 300 near the opening 11.

In the specific implementation process, the supporting roller 500 can be arranged at the junction of the winding area and the flattening area, so that the pulling-out height of the flexible screen 30 and the supporting piece 40 can be ensured to be consistent all the time in the subsequent pulling-out process; on the other hand, during the winding process, the supporting roller 500 can rotate automatically, so that the friction force of the flexible screen 30 and the supporting member 40 during the subsequent pulling out can be reduced, and the usability of the winding structure is improved.

In an embodiment of the present application, as shown in fig. 3, the supporting roller 500 includes a plurality of sub-supporting wheels 510 disposed independently of each other along a direction parallel to the extending direction of the supporting member winding shaft 300, and the rotation of each of the sub-supporting wheels 510 is not affected.

In a specific implementation process, the supporting roller 500 may be designed in a sectional manner, and a plurality of independent sub-supporting wheels 510 are disposed along the extending direction parallel to the supporting member winding shaft 300, and the rotation conditions, such as the rotation speed, of each sub-supporting wheel 510 are not affected, so that the defect of insufficient strength caused by excessively thin and excessively long supporting roller 500 is avoided. In practice, the rotational speed of each sub-support roller 501 is generally kept substantially the same as the speed at which the flexible screen 30 is pulled out. In addition, each sub supporting wheel 510 is independent of each other, so that the situation that the supporting roller 500 is too long and is easy to deform under pressure can be avoided, and the service performance of the flexible screen 30 in the subsequent flattening process is ensured. Taking the exemplary embodiment shown in fig. 3 as an example, the support roller 500 includes four sub-support wheels 510 disposed independently of each other in a direction parallel to the extending direction of the support member takeup shaft 300, and the rotation of the respective sub-support wheels 510 does not affect each other.

In the implementation, fig. 7 is an exploded view of one of the sub-supporting wheels 510 in fig. 3. Each sub-supporting wheel 510 includes a roller 501, third ball bearings 502 provided at opposite sides of the roller 501, and a stopper post 503. One end of the limiting post 503 corresponding to one sub supporting wheel 510 near the side edge of the housing 100 among the plurality of sub supporting wheels 510 is embedded in the inner diameter of the third ball bearing 502, and the other end is fixed on the housing 100, for realizing the axial positioning of the roller 501.

In one exemplary embodiment, as shown in fig. 8, the fixing manner between the sub-supporting wheels 510 and the housing 100 may be that the limiting posts 503 on one side of the roller 501 are placed in the semicircular grooves 120 of the first fixing portion 110 of the housing 100, and then the second fixing portion 130 of the housing 100 is fixed with the first fixing portion 110 through the threaded holes 140, so that the fixing arrangement between each sub-supporting wheel 510 and the housing 100 is realized, and the structural stability of the winding structure is ensured. Wherein the first fixing portion 110 and the second fixing portion 130 are part of the housing 100. Of course, the fixing manner between the sub-supporting wheel 510 and the housing 100 may be set according to practical application needs, which is not limited herein.

In one exemplary embodiment, the radius of the support reel 300 is smaller than the radius of the flexible screen reel 200 and larger than the radius of the support roller 500.

Illustratively, the radius of the support reel 300 is a, the radius of the flexible screen reel 200 is b, the radius of the support roller 500 is c, and the values between the radii satisfy the relationship: c is less than a and less than b. In this way, damage to the flexible screen 30 due to overlarge winding degree during subsequent winding of the flexible screen 30 is avoided. Illustratively, the flexible screen take-up reel 200 has a radius in the range of 3mm to 6mm, e.g., b is 4mm; the radius of the support winding shaft 300 ranges from 3mm to 6mm, for example, a is 3mm; the radius of the supporting roller 500 ranges from 1.5mm to 3mm, for example, c is 1.5mm.

It should be noted that, in the embodiment of the present application, the numerical relationship between the radius of the support member winding shaft 300, the radius of the flexible screen winding shaft 200 and the radius of the support roller 500 may be set according to the actual application requirement, and accordingly, specific numerical values of the respective radii may be set according to the actual application requirement, which is not limited herein.

In one exemplary embodiment, the distance between the rotation axis of the support winding shaft 300 and the bottom surface of the housing 100 is greater than the distance between the rotation axis of the flexible screen winding shaft 200 and the bottom surface, and less than the distance between the rotation axis of the support roller 500 and the bottom surface.

For example, the distance between the rotation axis of the support winding shaft 300 and the bottom surface of the housing 100 is d1, the distance between the rotation axis of the flexible screen winding shaft 200 and the bottom surface is d2, the distance between the rotation axis of the support roller 500 and the bottom surface is d3, and the values of the three satisfy the relationship: d2 < d1 < d3. In the specific implementation, specific values of the distances between the respective rotation axes and the bottom surface of the housing 100 may be set according to practical applications, which are not limited herein. Furthermore, the above arrangement is more advantageous for winding up the flexible screen 30 and the support 40.

In the embodiment of the present application, the distance between the rotation axis of the support member winding shaft 300 and the bottom surface of the housing 100, the distance between the rotation axis of the flexible screen winding shaft 200 and the bottom surface, and the distance between the rotation axis of the support roller and the bottom surface may be set according to the actual application requirements, and accordingly, specific values of the distances between the rotation axes and the bottom surface of the housing 100 may be set according to the actual application requirements, which is not limited herein.

It should be noted that, in practical application, because the flexible screen 30 has a repulsive force, a doming phenomenon occurs at the output shaft position, when the sizes of the storage spool 401-2 and the output spool 401-1 of each constant torque spring 400 are approximately equal, the axial position of the flexible screen winding shaft 200 is set to be lower than that of the support member winding shaft 300, so that the flexible screen 30 and the support member 40 on the support member winding shaft 300 can be more tightly attached together when the whole machine is pulled, and the service performance of the winding structure is improved. The distance difference between the axial center positions of the two is in the range of 0.5mm to 1.5mm. For example 0.5mm. In practical applications, a specific distance difference between the axial position of the flexible screen winding shaft 200 and the axial position of the support member winding shaft 300 may be set according to needs, which is not limited herein.

In one exemplary embodiment, the winding structure further includes a locking part for locking the movement of the flexible screen 30, a driving part for driving the blocking part 20 to move, and a control part for controlling the driving part. It should be noted that, the locking portion, the driving portion, and the control portion are not illustrated in the related drawings, and the related structures may be set according to actual application needs, which are not described in detail herein. Furthermore, the locking portion limits the means for rotating the flexible screen winding shaft 200 and the support member winding shaft 300, and can be unlocked by the action member. When it is necessary to unwind the flexible screen 30, the driving portion is controlled to operate by the control portion, a force is applied to the blocking portion 20 away from the receiving portion 10, and accordingly, the flexible screen 30 is unwound from the flexible screen winding shaft 200 and the support 40 is unwound from the support winding shaft 300, and the flexible screen 30 and the support 40 are extended and unwound from the opening 11 of the receiving portion 11. In addition, when the expansion size of the flexible screen 30 reaches the set threshold, the force application is stopped, and the rotation of the flexible screen winding shaft 200 and the support member winding shaft 300 can be limited by the locking portion, at this time, the constant torque spring 400 in the housing portion 10 continuously applies the tensile force to the flexible screen 30 and the support member 40, so that the flatness of the flexible screen 30 when being expanded is ensured.

When the flexible screen 30 is required to be stored or reduced in size, the rotation restriction of the flexible screen winding shaft 200 and the support member winding shaft 300 by the locking part is released, the driving part is controlled to work by the control part, the force close to the storage part 10 is applied to the blocking part 20, and accordingly, the constant torque spring 400 applies force to enable the flexible screen winding shaft 200 and the support member winding shaft 300 to rotate, so that the flexible screen 30 is driven to wind on the flexible screen winding shaft 200, and the support member 40 is driven to wind on the support member winding shaft 300. In particular, when the stopper 20 contacts the housing 100 of the storage unit 10, the winding operation is stopped.

Of course, the winding structure of the flexible screen provided in the embodiment of the present application may include other structures besides the above-mentioned structures, and other structures may be set according to practical application needs, which is not limited herein.

Based on the same inventive concept, as shown in fig. 1 and 2, an embodiment of the present application further provides a curled display device, including:

a flexible screen 30, a support 40 disposed away from the display surface of the flexible screen 30, and a winding structure as claimed in any one of the preceding claims, the flexible screen 30 being connected to the flexible screen winding shaft 200 through the opening 11 in the winding structure, the support 40 being connected to the support winding shaft 300 through the opening 11 in the winding structure.

In a specific implementation, the flexible screen 30 may be a flexible organic light emitting diode (Organic Light Emitting Diode, OLED), and accordingly, the scrolling display device may be an OLED flexible display device; in one exemplary embodiment, fig. 9 is a schematic cross-sectional view of the curled display device along the direction NN shown in fig. 2. Specifically, in the curled display device, the flexible screen 30 includes a flexible display 70 and a support layer 80 provided on the back of the flexible display 70; a back film 600 disposed between the support layer 80 and the flexible display 70, a pressure sensitive adhesive (Pressure Sensitive Adhesive, PSA) 700, a filter layer 800 disposed on the front of the flexible display 70, an optically clear adhesive (Optical Clarity Adhesive, OCA) 900, and a cover plate 910.

The supporting layer 80 is used for improving the flatness of the flexible screen 30, and the supporting layer 80 includes two foam layers and a partially hollowed-out stainless steel metal layer located between the two foam layers. For example, the elastic modulus of the supporting layer 80 is 5Mpa to 10Mpa and the thickness is 80 μm to 120 μm; the back film 600 may be used for a back protective layer of the flexible screen 30, and the elastic modulus of the back film 600 may be 2Gpa to 4Gpa, for example. The filter layer 800 may be a polarizer, or may be a color filter. The polarizer can reduce the reflection of the flexible screen 30 to the external environment light, improve the use experience of a user, avoid the influence of the external environment light on the organic luminescent material, ensure the service life of the organic luminescent material and improve the use performance of the flexible screen 30. Illustratively, the polarizer may have an elastic modulus of 3.5Gpa to 4.5Gpa and a thickness of 35 μm to 55 μm. The thickness of the polarizer is generally thicker, and when the filter layer 800 is a color filter, a color filter on package (Color Filter On Encapsulation, COE) technology is used, the light and thin design of the curled display device is ensured. By the cover plate 910 disposed on the filter layer 800, not only the related film layer can be protected from damage, but also the usability of the scrolling display device can be improved by disposing a coating layer having a specific function on the cover plate 900.

The coating may be one or more of an anti-glare (AG) protective film, an anti-fingerprint (AF) protective film, and an Ultraviolet (UV) protective film, as examples, but is not limited thereto. The cover plate 910 may have an elastic modulus of 100Mpa to 300Mpa and a thickness of 50 μm to 150 μm. In addition, the flexible screen 30 and other essential components of the curled display device will be understood by those skilled in the art, and are not described herein in detail, nor should they be considered as limiting the embodiments of the present application.

Furthermore, the crimping display device further comprises a support member 40 and a bracket structure 60 arranged at a side of the support member 40 facing away from the flexible screen 30, whereby the support performance of the whole machine is improved by the bracket structure 60. In one exemplary embodiment, the support structure 60 may be an organ support structure as shown in fig. 10 and 11. Fig. 10 is a schematic structural view of the support structure 60 in the unfolded state, and fig. 11 is a schematic structural view of the support structure 60 in the closed state.

For example, the support 40 may be a multi-layered composite material composed of patterned stainless steel SUS, foam, a bio-gel material, etc., wherein an etching process or a laser process may be used to prepare a pattern of the stainless steel SUS; the bionic glue material is adhered to the surface of the support piece 40, and in the whole machine, when the support piece 40 is unfolded, the bionic glue material is contacted with the back surface of the flexible screen 30, and the support piece 40 and the flexible screen 30 can be adhered together through a special micro-sucker structure on the bionic glue material to provide effective support for the screen, so that the flatness of the flexible screen 30 is improved; in addition, during the winding process, the supporting element 40 and the flexible screen 30 can be separated, especially, when the separation angle between the screen and the bionic glue material is larger than 10 degrees, the supporting element and the flexible screen can be separated under a small separation force, so that the supporting element and the flexible screen can be wound on the corresponding winding shaft conveniently. The foam can effectively avoid damage caused by friction of the ring layer when the supporting piece 40 is wound. Therefore, the usability of the winding structure in the flattening and winding processes is improved, and the usability of the curled display device is ensured.

In a specific implementation process, the principle of the problem solving of the curled display device is similar to that of the winding structure of the flexible screen, so that the implementation of the curled display device can be referred to the implementation of the winding structure, and repeated parts are omitted.

In a specific implementation process, the curl display device provided by the embodiment of the application can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. Other essential components of the curled display device will be understood by those skilled in the art, and will not be described herein in detail, nor should they be considered as limiting the application.

While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A roll-up structure for a flexible screen, comprising:

a blocking part arranged outside the shell;

2. The wrap-up structure of claim 1, wherein the receiving portion further comprises two constant torque springs, the constant torque springs comprising an output spool and a storage spool;

3. The wrap-up structure of claim 2, wherein each of said constant torque springs further comprises a metal spring plate having one end fixedly connected to a corresponding output spool and the other end connected to and windable by a corresponding storage spool.

4. A wind-up structure according to claim 3, wherein said housing portion further comprises a first ball bearing and a fixed shaft provided on each of said storage spools of said constant torque spring in order adjacent to the corresponding wind-up spool, said first ball bearing being embedded in the corresponding storage spool, one end of said fixed shaft being embedded in said first ball bearing, and the other end of said fixed shaft being embedded in the corresponding wind-up spool.

5. The winding structure according to claim 4, wherein the housing portion further includes a second ball bearing provided on a side of each spool of each constant torque spring facing away from the corresponding winding spool, and a positioning pin embedded in the second ball bearing, the positioning pin being fixedly connected with the housing.

6. The wrap-around structure of any one of claims 1-5, wherein the receiving portion further comprises a support roller disposed on a side of the support wrap-around shaft adjacent the opening.

7. The take-up structure of claim 6, wherein the support roller includes a plurality of sub-support wheels disposed independently of each other in a direction parallel to an extension direction of the support take-up shaft, and rotation of the respective sub-support wheels does not affect each other.

8. The wrap structure of claim 6 wherein the radius of the support wrap shaft is less than the radius of the flexible screen wrap shaft and greater than the radius of the support roller.

9. The wrap structure of claim 6, wherein a distance between a rotational axis of said support wrap spool and a bottom surface of said housing is greater than a distance between a rotational axis of said flexible screen wrap spool and said bottom surface and less than a distance between a rotational axis of said support roller and said bottom surface.

10. A scrolling display device, comprising:

the flexible screen, set up the support piece of the display surface that deviates from the flexible screen, and the rolling structure of any one of claims 1-9, the flexible screen pass the opening in the rolling structure with flexible screen rolling hub connection, the support piece passes the opening in the rolling structure with support piece rolling hub connection.