A display device comprising: a main body provided with a display module on which an image is displayed; a bending module located at the main body; and a controller, wherein the controller is configured to: controlling the bending module to change a curvature of the display module to any one of a flat mode in which the display module is flat, a first bending mode in which the display module has a first curvature, and a second bending mode in which the display module has a second curvature, wherein the second curvature is a maximum curvature of the display module; switching the display module to any one of the flat mode, the first bending mode, and the second bending mode based on a distance to a remote controller; and switching the mode of the display module based on receiving a user's request; characterised in that: the bending module is located at a center of a rear surface of the main body; when the mode of the display module is switched based on the distance to the remote controller, the controller is configured to switch the mode of the display module during a first time period, when the mode of the display module is switched based on receiving a user's request, the controller is configured to switch the mode of the display module during a second time period, wherein the first time period is longer than the second time period. a main body provided with a display module on which an image is displayed; a bending module located at the main body; and a controller, wherein the controller is configured to: controlling the bending module to change a curvature of the display module to any one of a flat mode in which the display module is flat, a first bending mode in which the display module has a first curvature, and a second bending mode in which the display module has a second curvature, wherein the second curvature is a maximum curvature of the display module; switching the display module to any one of the flat mode, the first bending mode, and the second bending mode based on a distance to a remote controller; and switching the mode of the display module based on receiving a user's request; characterised in that: the bending module is located at a center of a rear surface of the main body; when the mode of the display module is switched based on the distance to the remote controller, the controller is configured to switch the mode of the display module during a first time period, when the mode of the display module is switched based on receiving a user's request, the controller is configured to switch the mode of the display module during a second time period, wherein the first time period is longer than the second time period. controlling the bending module to change a curvature of the display module to any one of a flat mode in which the display module is flat, a first bending mode in which the display module has a first curvature, and a second bending mode in which the display module has a second curvature, wherein the second curvature is a maximum curvature of the display module; switching the display module to any one of the flat mode, the first bending mode, and the second bending mode based on a distance to a remote controller; and switching the mode of the display module based on receiving a user's request; characterised in that: the bending module is located at a center of a rear surface of the main body; when the mode of the display module is switched based on the distance to the remote controller, the controller is configured to switch the mode of the display module during a first time period, when the mode of the display module is switched based on receiving a user's request, the controller is configured to switch the mode of the display module during a second time period, wherein the first time period is longer than the second time period. the bending module is located at a center of a rear surface of the main body; when the mode of the display module is switched based on the distance to the remote controller, the controller is configured to switch the mode of the display module during a first time period, when the mode of the display module is switched based on receiving a user's request, the controller is configured to switch the mode of the display module during a second time period, wherein the first time period is longer than the second time period.