Flexible display device

1. A flexible display device, comprising:

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,

wherein 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,

wherein the supporting frame is provided with one sheet-shaped anti-roll bar disposed at the bottom of the second recess with a length extended along an entire length of the supporting frame, and

wherein the anti-roll bar has a width and a thickness, and the width is larger than the thickness and smaller than the length of the anti-roll bar, and is perpendicular to a display surface of the flexible display screen when the opening of the second recess accommodates and holds the edge of the flexible display screen,

wherein the housing 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.

2. The flexible display device of claim 1 , wherein the anti-roll bar is a metal bar.

3. The flexible display device of claim 1 , wherein the rollable 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 comprises a shoulder located at two sides of the first recess and a bottom connected to the shoulder of the protection frame.

4. The flexible display device of claim 3 , wherein the housing comprises an opening for the flexible display screen and the supporting frame to be pulled out, each of two sides of the opening of the housing is provided with protrusions opposed to each other, each of the protrusions 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.

5. The flexible display device of claim 1 , wherein 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.

6. The flexible display device of claim 5 , wherein the drawing frame is connected with the supporting frame.