Display Device

1. A display device, comprising: a body; a roller rotatably installed in the body; a flexible display configured to be wound or unwound from the roller in response to a rotation of the roller; and a controller configured to: detect a type of a content to be displayed, and change a screen size of the flexible display according to the detected type of the content by winding or unwinding of the flexible display, wherein the controller is further configured to: provide an option for selecting one of a plurality of modes for displaying different detected types or quantities of the content, and expand the flexible display in a size appropriate for a preset type or quantity of the content in accordance with the selected mode, wherein the controller is further configured to automatically execute one of the modes under a prescribed condition, and wherein the condition comprises at least one of sensing that a preset time arrives, sensing that a user is present at home or approaches the display device, and sensing the user turns on a power of the display device.

2. The display device of claim 1, wherein the controller is further configured to: activate the display device according to a first mode for displaying first information including a brief information regarding the content on the flexible display, and expand the flexible display in a first size appropriate for displaying the first information from the body.

3. The display device of claim 2, wherein the controller is further configured to: activate the display device according to a second mode for providing second information, the second information including more detailed information than the first information or the content itself, and expand the flexible display in a second size appropriate for providing the second information from the body.

4. The display device of claim 3, wherein the controller is further configured to: activate the display device according to a third mode for displaying third information corresponding to the content itself on the flexible display, and expand the flexible display in a third size appropriate for displaying the third information from the body.

5. The display device of claim 4, wherein the controller is further configured to: activate the display device according to a fourth mode for displaying fourth information corresponding to the content having a resolution and screen ratio different from those of the third information on the flexible display, and expand the flexible display in a fourth size appropriate for displaying the fourth information from the body.

6. The display device of claim 1, wherein the content comprises a video content including a TV show or a sports broadcast, an audio content including music, and a supplementary content including a user customized information and a living information.

7. The display device of claim 2, wherein the first information comprises a reminder or notification for the content to be broadcasted or played and a summary of the content for providing a user with a prescribed information, wherein the first size includes a screen ratio of 10:1˜15:1, and wherein the reminder or notification of the first information comprises a name of the content to be broadcasted or played, a broadcast and play scheduled time of the content, and a viewing or recording reservation of the content.

8. The display device of claim 3, wherein a height of the flexible display according to the second size is at least three times greater than that of the flexible display according to the first size.

9. The display device of claim 3, wherein the second information comprises a preview of the content to be broadcasted or played, wherein the second size comprises a screen ratio of 4:1˜6:1, and wherein the preview of the second information comprises a table of contents and a synopsis.

10. The display device of claim 3, wherein the second information comprises an audio content played via the display device and a user interface configured to control a playback of the audio content.

11. The display device of claim 10, wherein the user interface of the second information includes a play list of the audio content or detailed information of the played audio content.

12. The display device of claim 5, wherein the third size comprises a screen ratio of 16:9, wherein the fourth size is greater than the third size, and wherein the fourth size comprises a screen ratio of 1.9:1˜2.35:1.

13. The display device of claim 2, wherein the controller is further configured to automatically perform the first mode under a prescribed condition, and wherein the condition comprises at least one of sensing that a preset time arrives, sensing that a user is present at home or approaches the display device, and sensing the user turns on a power of the display device.

14. The display device of claim 2, wherein the controller is further configured to provide within the first information an option to enter into any one of other modes from the first mode.

15. The display device of claim 3, wherein the controller is further configured to provide within the second information an option to enter into the first mode and other modes from the second mode.

16. The display device of claim 5, wherein the controller is further configured to automatically execute either the third mode or the fourth mode to fit a real resolution and a real screen ratio of a provided content in response to a request to execute the third mode.

17. The display device of claim 5, wherein the controller is further configured to provide a user with an option for selecting either the third mode or the fourth mode in consideration of a real resolution and a real screen ratio of the provided content in response to a request to execute the third mode.

18. The display device claim 4, wherein when an execution of the first mode is requested, if the display device does not have the first information according to the first mode, the controller is further configured to activate the display device according to the third mode.

19. A display device, comprising: a body; a roller rotatably installed in the body; a flexible display configured to be wound or unwound from the roller in response to a rotation of the roller; and a controller configured to: receive an input of the user, detect a type of a content to be displayed, change a screen size of the flexible display according to the detected type of the content by winding or unwinding of the flexible display, automatically execute a plurality of modes for displaying different detected types or quantities of the content under a prescribed condition, activate the display device according to a first mode for displaying first information including a brief information regarding the content on the flexible display, activate the display device according to a second mode for providing second information, the second information including more detailed information than the first information or the content itself, and activate the display device according to a third mode for displaying third information corresponding to the content itself on the flexible display, wherein the prescribed condition comprises at least one of sensing that a preset time arrives, and sensing that a user is present at home or approaches the display device, and wherein when an execution of the first mode is requested through the input of the user, if the display device does not have the first information according to the first mode, the controller is further configured to activate the display device according to the third mode.

20. The display device of claim 19, wherein the controller is further configured to: expand the flexible display in a first size appropriate for displaying the first information from the body in the first mode.

21. The display device of claim 20, wherein the controller is further configured to: expand the flexible display in a second size appropriate for providing the second information from the body in the second mode.

22. The display device of claim 21, wherein the controller is further configured to: expand the flexible display in a third size appropriate for displaying the third information from the body in the third mode.

23. The display device of claim 22, wherein the controller is further configured to: activate the display device according to a fourth mode for displaying fourth information corresponding to the content having a resolution and screen ratio different from those of the third information on the flexible display, and expand the flexible display in a fourth size appropriate for displaying the fourth information from the body.

24. The display device of claim 23, wherein the content comprises a video content including a TV show or a sports broadcast, an audio content including music, and a supplementary content including a user customized information and a living information.

25. The display device of claim 23, wherein the third size comprises a screen ratio of 16:9, wherein the fourth size is greater than the third size, and wherein the fourth size comprises a screen ratio of 1.9:1-2.35:1.

26. The display device of claim 23, wherein the controller is further configured to automatically execute either the third mode or the fourth mode to fit a real resolution and a real screen ratio of a provided content in response to a request to execute the third mode.

27. The display device of claim 23, wherein the controller is further configured to provide a user with an option for selecting either the third mode or the fourth mode in consideration of a real resolution and a real screen ratio of the provided content in response to a request to execute the third mode.

28. The display device of claim 21, wherein a height of the flexible display according to the second size is at least three times greater than that of the flexible display according to the first size.

29. The display device of claim 21, wherein the second information comprises a preview of the content to be broadcasted or played, wherein the second size comprises a screen ratio of 4:1-6:1, and wherein the preview of the second information comprises a table of contents and a synopsis.

30. The display device of claim 21, wherein the second information comprises an audio content played via the display device and a user interface configured to control a playback of the audio content.

31. The display device of claim 30, wherein the user interface of the second information includes a play list of the audio content or detailed information of the played audio content.

32. The display device of claim 21, wherein the controller is further configured to provide within the second information an option to enter into other modes from the second mode.

33. The display device of claim 20, wherein the first information comprises a reminder or notification for the content to be broadcasted or played and a summary of the content for providing a user with a prescribed information, wherein the first size includes a screen ratio of 10:1-15:1, and wherein the reminder or notification of the first information comprises a name of the content to be broadcasted or played, a broadcast and play scheduled time of the content, and a viewing or recording reservation of the content.

34. The display device of claim 20, wherein the controller is further configured to automatically perform the first mode under a prescribed condition.

35. The display device of claim 20, wherein the controller is further configured to provide within the first information an option to enter into any one of other modes from the first mode.

36. The display device claim 19, wherein the controller is further configured to: provide an option for selecting one of the plurality of modes for displaying different detected types or quantities of the content, and expand the flexible display in a size appropriate for a preset type or quantity of the content in accordance with the selected mode.