Display device

1. A display device, comprising: a display unit which displays an image; a roller to which an end of the display unit is fixed and which winds or unwinds the display unit by rotating; a housing which accommodates the display unit and the roller; and a guide member which extends from a top surface of the housing defining an opening to inside the housing and guides a movement of the display unit inside the housing, wherein the guide member is fixed inside the housing to be adjacent to and facing a front surface of the housing, the guide member is overlapped with the roller viewed from the front surface, and the display unit is capable of moving in a vertical upward and vertical downward directions in a state in which the display unit is tightly close to the front surface of the housing, and wherein the display unit remains flat in the unwound state when exposed outside the housing extended in the vertical upward direction, and the display unit is not contacted with the guide member at an outside of the housing extended in the vertical upward direction; and the housing includes a window including a transparent material and provided on the front surface of the housing; and the display unit displays a piece of information in a first area, disposed adjacent to the window inside the housing, when the display unit is wound and a different piece of information in a second area through the window.

2. The display device according to claim 1 , wherein the guide member includes an extension part extending in a direction from a first side to a second side of the housing.

3. The display device according to claim 2 , wherein the guide member further includes a first extension part extending in a direction from an upper side to a lower side of the housing.

4. The display device according to claim 3 , wherein the guide member further includes a second extension part extending in a direction from a first side surface to a second side surface of the housing.

5. The display device according to claim 1 , wherein the first area is driven in an always-on-display mode.

6. A display device, comprising: a display unit which displays an image; a roller to which an end of the display unit is fixed which winds or unwinds the display unit by rotating; a housing which accommodates the display unit and the roller, the housing including a window including a transparent material on a surface thereof; and a guide member which extends from a side of the housing defining an opening to inside the housing and guides a movement of the display unit inside the housing, wherein the guide member is fixed inside the housing to be adjacent to and facing a front surface of the housing, and the display unit is capable of moving in a vertical upward and vertical downward directions in a state in which the display unit is tightly close to the front surface of the housing, and wherein the display unit remains flat in the unwound state when exposed outside the housing extended in the vertical upward direction, and the display unit is not contacted with the guide member at an outside of the housing extended in the vertical upward direction; and the housing includes a window including a transparent material and provided on the front surface of the housing; and the display unit displays a piece of information in a first area, disposed adjacent to the window inside the housing, when the display unit is wound and a different piece of information in a second area through the window.

7. The display device according to claim 6 , wherein the guide member is provided in plural and the plurality of guide members are provided inside the housing and guide the upward and downward movement of the display unit.

8. The display device according to claim 7 , wherein the display unit is guided to move between the surface of the housing and the plurality of guide members.

9. The display device according to claim 1 , wherein an inside of the housing is partitioned by the guide member into a first space and a second space,

wherein the roller is disposed in the first space of the housing, and

wherein the opening is disposed adjacent to the second space than the first space.