Abstract:
The provided flexible display device has supporting frames on a rolled side of the flexible display screen. When the flexible display screen and the supporting frames are drawn out of a containing body, the supporting frames are combined with the rolled side of the flexible display screen to prevent the flexible display screen from being rolled to influence the viewing effect.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application is based upon International Application No. PCT/CN2016/079382, filed on Apr. 15, 2016, which is based upon and claims priority of Chinese Patent Application No. 201510290021.6 filed on May 29, 2015, which is hereby incorporated by reference in its entirety as part of this application. 
     
    
     TECHNICAL FIELD 
       [0002]    The present disclosure relates to the field of display technology, and more particularly to a flexible display device. 
       BACKGROUND 
       [0003]    A flexible display screen has a flexible and rollable performance, and is portable compared to a traditional display screen. However, due to the flexible and rollable performance, the flexible display screen also rolls easily when it is stretched to be used, thus affecting the viewing effect. 
       SUMMARY 
       [0004]    The present disclosure provides a flexible display device, including a flexible display screen; a supporting frame disposed at a rollable side of the flexible display screen; and a housing for accommodating the flexible display screen and the supporting frame, wherein the supporting frame is configured to prevent the flexible display screen from being rolled when the flexible display screen is drawn from the housing. 
         [0005]    In one embodiment, a side of the flexible display screen provided with the supporting frame is further provided with a protection frame for protecting the flexible display screen, the protection frame has a first recess, the first recess has an opening for accommodating and holding an edge of the flexible display screen, and the protection frame includes a shoulder located at two sides of the first recess and a bottom connected to the shoulder. 
         [0006]    In one embodiment, the supporting frame has a second recess, the second recess has an opening for accommodating and holding an edge of the flexible display screen, and the supporting frame comprises a shoulder located at two sides of the second recess and a bottom connected to the shoulder. 
         [0007]    In one embodiment, the supporting frame is provided with an anti-roll bar along a lengthwise direction thereof, and the anti-roll bar is disposed at the bottom. 
         [0008]    In one embodiment, the anti-roll bar is sheet-shaped. 
         [0009]    In one embodiment, the anti-roll bar is a metal bar. 
         [0010]    In one embodiment, the flexible display screen further comprises a drawing frame located at a drawn side of the flexible display screen, and the drawing frame is used to draw out the flexible display screen. 
         [0011]    In one embodiment, the drawing frame is connected with the supporting frame. 
         [0012]    In one embodiment, the housing comprises an opening through which the flexible display screen and the supporting frame are pulled out, each of two sides of the opening is provided with protrusions opposed to each other, the protrusion presses the bottom of the first recess into the opening of the second recess when the supporting frame and the flexible display screen are simultaneously drawn from the housing. 
         [0013]    In one embodiment, the housing further comprises a first roller for winding the flexible display screen, and a second roller for winding the supporting frame and provided at two ends of the first roller, wherein the first roller has an axis perpendicular to that of the second roller. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0014]      FIG. 1  is a schematic view of a structure in which a flexible display screen of a flexible display device is drawn out in a first embodiment of the present disclosure; 
           [0015]      FIG. 2  is a schematic view of a structure in which a flexible display screen of a flexible display device is withdrawn into a housing in a first embodiment of the present disclosure; 
           [0016]      FIG. 3  is a schematic sectional view of a structure of a flexible display screen of a flexible display device, a protection frame of the flexible display screen and a supporting frame in a first embodiment of the present disclosure; 
           [0017]      FIG. 4  is a schematic sectional view of a structure in which a protection frame of a flexible display screen of a flexible display device is coupled with a supporting frame in a first embodiment of the present disclosure; 
           [0018]      FIG. 5  is a schematic view of a structure of an opening of a housing of a flexible display device in a first embodiment of the present disclosure; 
           [0019]      FIG. 6  is a schematic sectional view of a structure of a flexible display device in a first embodiment of the present disclosure; 
           [0020]      FIG. 7  is a schematic view of an internal structure of a housing of a flexible display device in a first embodiment of the present disclosure; 
           [0021]      FIG. 8  is a schematic view of a structure in which a second roller in a housing of a flexible display device is rolled with a supporting frame in a first embodiment of the present disclosure. 
       
    
    
     DETAILED DESCRIPTION 
       [0022]    The present disclosure will be described below in further detail with reference to the accompanying drawings and specific implementations, such that the technical solutions of the present disclosure may be better understood by those skilled in the art. 
       The First Embodiment 
       [0023]    As shown in  FIGS. 1 to 8 , the present embodiment provides a flexible display device including a flexible display screen  2 , a supporting frame  3  disposed at a rollable side of the flexible display screen  2 , and a housing  1  for accommodating the flexible display screen  2  and the supporting frame  3 . The supporting frame  3  is configured to prevent the flexible display screen  2  from being rolled when the flexible display screen  2  is drawn from the housing  1 . 
         [0024]    When the flexible display device provided by the present embodiment is in use, the flexible display screen can be extended out of the housing, and the flexible display screen is supported by the supporting frame to prevent the flexible display screen from being rolled, which affects the viewing effect. Moreover, when the flexible display device is not in use, the flexible display screen and the supporting frame may be withdrawn into the housing such that it is very portable. 
         [0025]      FIGS. 1 and 2  show a schematic view of a structure in which the flexible display screen is in use and not in use, respectively. 
         [0026]    As shown in  FIG. 3 , in one embodiment, a side of the flexible display screen  2 , which is provided with the supporting frame  3 , may be also provided with a protection frame  21  for protecting the flexible display screen  2 . The protection frame  21  has a first recess  22  in its cross section, and the first recess  22  has an opening for accommodating and holding the flexible display screen  2 . The protection frame  21  includes a shoulder  221  located at two sides of the first recess  22  and a bottom  222  connected to the shoulder  221 . 
         [0027]    It is to be understood that the protection frame  21  and the flexible display screen  2  are separated in  FIG. 3 , which is simply for presenting a structure of the protection frame  21 , and in fact, the protection frame  21  is attached onto the side of the flexible display screen  2 , and is rolled and stretched with the flexible display screen  2 . 
         [0028]    As shown in  FIG. 3 , in one embodiment, the supporting frame  3  has a second recess  31  in its cross section and the second recess  31  has an opening for accommodating and holding the protection frame  21 , i.e. for accommodating and holding the protection frame  21 , such that the flexible display screen  2  is supported by the supporting frame  3  when the flexible display screen  2  is stretched to be used. The supporting frame  3  includes a shoulder  311  located at two sides of the second recess  31  and a bottom  312  connected to the shoulder  311 . 
         [0029]    As shown in  FIG. 3 , in one embodiment, the supporting frame  3  is provided with an anti-roll bar  32  along a lengthwise direction thereof, and the anti-roll bar  32  enables the supporting frame  3  to be not easily rolled along a Y direction, such that the flexible display screen  2  may not be rolled when it is stretched to be used, and a good display effect is maintained. Moreover, the anti-roll bar  32  enables the supporting frame  3  to be easily rolled along an X direction, such that the supporting frame  3  is easily to be rolled to be withdrawn. In this embodiment, the anti-roll bar  32  is sheet-shaped, which is disposed perpendicularly to the shoulder  311  of the second recess, and is disposed in the bottom  312  of the second recess. 
         [0030]    It is to be understood that the supporting frame  3  may be formed by a material selected from a flexible rubber and the like. 
         [0031]    As shown in  FIG. 3 , the anti-roll bar  32  has a thickness along the X direction, and has a width along the Y direction. In one embodiment, the anti-roll bar  32  has a width to thickness ratio greater than 3, which ensures that the anti-roll bar  32  is easily rolled along the X direction and is not easily rolled along the Y direction. 
         [0032]    In one embodiment, the anti-roll bar  32  is a metal bar, which ensures that the anti-roll bar  32  has a flexibility along the X direction and a rigidity along the Y direction. 
         [0033]    As shown  FIG. 4 , due to the rigidity of the anti-roll bar  32  along the Y direction, the flexible display screen  2  and the supporting frame  3  are not easily rolled when they are coupled. 
         [0034]    In one embodiment, as shown in  FIG. 1 , the flexible display screen  2  further includes a drawing frame  4  located at a drawn side of the flexible display screen  2  and connected with the protection frame  21 , and the drawing frame  4  is used to draw out the flexible display screen  2 . 
         [0035]    In one embodiment, the drawing frame  4  is connected with the supporting frame  3 . In particular, the drawing frame  4  is connected with the supporting frame  3  in a pivotal connection. That is, the supporting frame  3  can be rotated to a certain degree with respect to the drawing frame  4  in a plane where the flexible display screen  2  is located. Of course, the drawing frame  4  may be connected with the supporting frame  3  in other connecting ways, as long as the supporting frame  3  and the drawing frame  4  are connected with each other when the flexible display screen  2  is drawn or rolled. 
         [0036]    The drawing frame  4  remains outside of the housing  1  when the flexible display screen  2  is withdrawn into the housing  1 , such that the flexible display screen  2  and the supporting frame  3  are easily pulled out by the drawing frame  4  when the flexible display screen  2  is to be used. 
         [0037]    As shown in  FIGS. 5 to 8 , in one embodiment, the housing  1  includes an opening  11  through which the flexible display screen  2  and the supporting frame  3  are pulled out. The opening  11  has two sides, each of which is provided with protrusions  12  opposed to each other. The protrusion  12  is used to press the bottom  222  of the first recess into the opening of the second recess  31  when the supporting frame  3  and the flexible display screen  2  are simultaneously drawn from the housing  1 . 
         [0038]    As shown in  FIG. 6  and  FIG. 7 , when the flexible display screen  2  and the supporting frame  3  are pulled out by using the drawing frame  4 , the flexible display screen  2  and the supporting frame  3  are coupled with each other between the protrusion  12  and sides of the opening  11  due to being pressed, such that the flexible display screen  2  is supported by the supporting frame  3 . 
         [0039]    In one embodiment, the housing  1  further includes a first roller  13  for winding the flexible display screen  2 , and two second rollers  14  for winding the supporting frame  3  provided respectively at two ends of the first roller  13 . The axes of the first roller  13  and the second roller  14  are perpendicular to each other, which facilitates the winding of the flexible display screen  2  and the supporting frame  3 . 
         [0040]    When the flexible display screen  2  and the supporting frame  3  are rolled, the flexible display screen  2  and the supporting frame  3  are separated by traction of the first roller  13  and the second roller  14  between the protrusion  12  and sides of the opening  11 , such that the flexible display screen  2  and the supporting frame  3  are rolled onto the first roller  13  and the second roller  14 , respectively. 
         [0041]    As shown in  FIG. 8 , the supporting frame  3  is rolled onto the second roller  14 . 
         [0042]    It is to be understood that the first roller  13  is used to wind the flexible display screen  2 . In particular, the first roller  13  may be provided at the bottom of the housing  1  just below the flexible display screen  2  to facilitate the winding of the flexible display screen  2 . Moreover, for better winding of the supporting frame  3 , the second roller  14  may be arranged in parallel with the plane of the supporting frame  3 , that is, the axes of the first roller  13  and the second roller  14  are perpendicular to each other. 
         [0043]    It is to be understood that the above implementations are merely exemplary implementations for the purpose of illustrating the principles of the present invention, but the present disclosure is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and spirit of the present disclosure, which are also considered to be within the scope of the present disclosure.