A display apparatus comprising: a receiving unit arranged to receive an image signal; a first base member and a second base member; a display module configured to display the received image signal, the display module having a viewing area fixed to the first base member and a background area fixed to the second base member hinge-coupled to the first base member; a first driving device configured to change the curvature of the viewing area of the display module, a second driving device configured to generate a driving force to rotate the second base member around an axis of the hinge coupling the second base member to the first base member so as to move the background area toward the front side or toward the rear side of the display module, an input unit configured to receive a command to form an information area in the background area for displaying additional information related to an image displayed on the viewing area or other general information, wherein the display apparatus is further configured to display the additional information related to an image displayed on the viewing area or other general information in an information area within the background area in response to receiving a command to form the information area, the input unit is further configured to receive a bending command from the user, and the display apparatus is further configured, in response to receiving the bending command from the user: to control the first and second driving device to transform the display module from a flat state into a curved state having the same overall curvature, when the received image signal is displayed on the entirety of the display module, and to control the first driving device to transform the viewing area from a flat state to a curved state and to control the second driving device to rotate the second base member toward the rear side of the display module, when receiving the command to form the information area or when the received image signal is displayed on the display module with an aspect ratio different from an aspect ratio of the display module. a receiving unit arranged to receive an image signal; a first base member and a second base member; a display module configured to display the received image signal, the display module having a viewing area fixed to the first base member and a background area fixed to the second base member hinge-coupled to the first base member; a first driving device configured to change the curvature of the viewing area of the display module, a second driving device configured to generate a driving force to rotate the second base member around an axis of the hinge coupling the second base member to the first base member so as to move the background area toward the front side or toward the rear side of the display module, an input unit configured to receive a command to form an information area in the background area for displaying additional information related to an image displayed on the viewing area or other general information, wherein the display apparatus is further configured to display the additional information related to an image displayed on the viewing area or other general information in an information area within the background area in response to receiving a command to form the information area, the input unit is further configured to receive a bending command from the user, and the display apparatus is further configured, in response to receiving the bending command from the user: to control the first and second driving device to transform the display module from a flat state into a curved state having the same overall curvature, when the received image signal is displayed on the entirety of the display module, and to control the first driving device to transform the viewing area from a flat state to a curved state and to control the second driving device to rotate the second base member toward the rear side of the display module, when receiving the command to form the information area or when the received image signal is displayed on the display module with an aspect ratio different from an aspect ratio of the display module. to control the first and second driving device to transform the display module from a flat state into a curved state having the same overall curvature, when the received image signal is displayed on the entirety of the display module, and to control the first driving device to transform the viewing area from a flat state to a curved state and to control the second driving device to rotate the second base member toward the rear side of the display module, when receiving the command to form the information area or when the received image signal is displayed on the display module with an aspect ratio different from an aspect ratio of the display module.