Display device

1. A display device, comprising:

a housing comprising a display window;

a flexible screen assembled in the housing and comprising a display area and a light-transmissive area defined on one end of the display area; and

an optical component disposed in the housing and located on a side of the flexible screen facing away the display window;

wherein the flexible screen is slidable with respect to the display window to enable switching of the display device between a first state and a second state;

wherein the display area of the flexible screen is directly facing the display window, and the light-transmissive area is located outside the display window in the first state; and

wherein the light-transmissive area of the flexible screen is located in the display window and directly facing the optical component in the second state;

wherein the display device further comprises a first roller and a second roller disposed in the housing and located at two ends of the display device, wherein two ends of the flexible screen are attached around the first roller and the second roller, respectively, so that the flexible screen slides around and against the first roller and the second roller;

wherein the flexible screen further comprises a first end and a second end, the first end of the flexible screen is attached around the first roller to be connected to the housing through a first connecting member, and the second end of the flexible screen is attached around the second roller to be connected to the housing through a second connecting member.

2. The display device of claim 1 , wherein the first connecting member comprises:

an adhesive plate fixed on the first end or the second end of the flexible screen;

a gear rack fixed on the adhesive plate; and

a gear meshing with the gear rack and rotatably connected to the housing;

wherein the gear is configured to drive the gear rack to slide, and the gear rack is configured to drive the flexible screen to slide with respect to the display window.

3. The display device of claim 2 , wherein the gear rack has a length equal to a sliding distance that the flexible screen slides between the first state and the second state of the display device.

4. The display device of claim 1 , wherein the first connecting member and the second connecting member comprise:

a first magnetic element fixed to the first end or the second end of the flexible screen;

a second magnetic element disposed on the housing facing away the display window and being magnetically opposite to the first magnetic element; and

a third magnetic element disposed on the housing facing away the display window and being magnetically opposite to the first magnetic element;

wherein the first magnetic element attracts the second magnetic element in the first state, and the first magnetic element attracts the third magnetic element in the second state.

5. The display device of claim 4 , wherein the second magnetic element is spaced apart from the third magnetic element at a spacing equal to a sliding distance that the flexible screen slides between the first state and the second state of the display device.

6. The display device of claim 1 , further comprising a driving element connected to the firsts connecting member and the second connecting member and configured to drive the flexible screen to slide with respect to the display window.

7. The display device of claim 6 , further comprising:

a distance sensing element disposed in the housing and configured to sense a sliding distance that the flexible screen slides with respect to the display window; and

a control element disposed in the housing and configured to control whether the driving element stops driving the flexible screen according to the sliding distance being sensed.

8. The display device of claim 1 , wherein the first end and the second end of the flexible screen are curvingly attached to the first roller and the second roller, respectively, and are wound inwardly or stretched out on the first roller and the second roller, respectively, along with the sliding of the flexible screen with respect to the display window.

9. The display device of claim 1 , wherein the first connecting member and the second connecting member are slidably connected to the housing and are driven simultaneously.

10. The display device of claim 1 , wherein the first connecting member is slidably connected to the housing, and the second connecting member is fixedly connected to the housing.

11. The display device of claim 1 , wherein at least a through hole passing through the flexible screen is defined in the light-transmissive area.

12. The display device of claim 1 , further comprising a cover assembled above the display window of the housing and the flexible screen, wherein the flexible screen is slidable with respect to the cover.

13. The display device of claim 12 , wherein a lubricant is filled between the flexible screen and the cover.

14. The display device of claim 13 , wherein the lubricant is an optically clear adhesive.

15. The display device of claim 1 , further comprising a control device for enabling an automatic switching of the flexible device between the first state and the second state.

16. The display device of claim 1 , wherein the housing is provided with a slidable button fixedly connected to the first connecting member and the second connecting member and configured to be pushed, so that the flexible screen is slidable with respect to the display window.

17. The display device of claim 1 , wherein the display device is in a full-screen display state in the first state.

18. The display device of claim 1 , wherein the second connecting member is a screen tensioning assembly, and the screen tensioning assembly applies a pre-tensioning force to the flexible screen.