Abstract: A controlling a portable device comprising a first touch screen and a second touch screen is provided. The method includes displaying first information related to a first application on the first touch screen and displaying second information related to the first application on the second touch screen; receiving a first user input moving to the first touch screen on the second touch screen; and replacing the first information and the second information with a third information and a fourth information related to the first application on the first touch screen and the second touch screen, in response to receiving the first user input, wherein each of the third information and the fourth information is displayed while being slidden in direction from the second touch screen to the first touch screen and the third information is displayed over a boundary between the first touch screen and the second screen during the sliding of the third information and the fourth information.

Abstract: A flexible display apparatus is provided. The flexible display apparatus includes a display, a sensor which senses shape deformation of the display, a storage which, if a shape deformation is sensed, stores operation state information of a first operation state of the flexible display apparatus prior to the first shape deformation being performed, and a controller which performs a function corresponding to the first shape deformation if a second shape deformation different from the first shape deformation is sensed, returns to the first operation state according to the operation state information stored in the storage.

Abstract: A transparent display apparatus is provided. The transparent display apparatus includes a transparent display which displays information, a sensor which senses background information in a first direction, and a controller configured to modify a display state of the displayed information on the transparent display based on the sensed background information.

Abstract: A flexible display apparatus includes a flexible display, a sensor which senses bending of the flexible display, and a controller which determines a screen activation region and a screen inactivation region from among a plurality of display regions of the flexible display based on the sensed bending, and displays a predetermined screen on the screen activation region.

Abstract: A controlling a portable device comprising a first touch screen and a second touch screen is provided. The method includes displaying first information related to a first application on the first touch screen and displaying second information related to the first application on the second touch screen; receiving a first user input moving to the first touch screen on the second touch screen; and replacing the first information and the second information with a third information and a fourth information related to the first application on the first touch screen and the second touch screen, in response to receiving the first user input, wherein each of the third information and the fourth information is displayed while being slidden in direction from the second touch screen to the first touch screen and the third information is displayed over a boundary between the first touch screen and the second screen during the sliding of the third information and the fourth information.

Abstract: A user interaction method of a user terminal device including a bent touchscreen includes: establishing a connection between the user terminal device and an external device located external to the user terminal device, such that the user terminal device and the external device are able to communicate with each other; displaying a UI element associated with the external device on a sub-region of the bent touch screen; and performing a function associated with the UI element in response to a user gesture selecting the UI element.

Abstract: A transparent display apparatus is provided. The transparent display apparatus includes a transparent display which displays information, a sensor which senses background information in a first direction, and a controller configured to modify a display state of the displayed information on the transparent display based on the sensed background information.

Abstract: An electronic device is provided. The electronic device includes one or more processors that, while the electronic device is in a locked state, control to detect whether the electronic device is lifted, in response to detecting that the electronic device is lifted, control to activate the display, obtain an image from a camera, detect a face included in the image, and perform authentication of a user based on the face being detected in the image. Based on a result of the authentication, the one or more processors switch a state of the electronic device from the locked state to an unlocked state and display an indicator for indicating that the electronic device is in the unlocked state.

Abstract: A controlling a portable device comprising a first touch screen and a second touch screen is provided. The method includes displaying first information related to a first application on the first touch screen and displaying second information related to the first application on the second touch screen; receiving a first user input moving to the first touch screen on the second touch screen; and replacing the first information and the second information with a third information and a fourth information related to the first application on the first touch screen and the second touch screen, in response to receiving the first user input, wherein each of the third information and the fourth information is displayed while being slidden in direction from the second touch screen to the first touch screen and the third information is displayed over a boundary between the first touch screen and the second screen during the sliding of the third information and the fourth information.

Abstract: A mobile device is provided. The mobile device includes a body of a bangle type configured to be worn on a user body, a display mounted in the body, a motion sensor configured to detect a motion, a storage configured to store control information which is differently set according to a motion state, and, when a motion is detected by the motion sensor, a controller configured to change a screen of the display according to control information corresponding to the detected motion. Accordingly, the mobile device is easily carried and used.

Abstract: A bendable display device and a display method of the bendable display device including a bendable display are provided. The bendable display device includes a display; and a controller configured to display an object on the display, and in response to receiving a user input in a state which the display is rolled, change the object displayed on the display. The method includes displaying an object on the display; and in response to receiving a user input in a state which the display is rolled, changing the object displayed on the display.

Abstract: A content display method of a user terminal device including a bended touch screen divided into a main area and a sub area, includes displaying, on the main area, a first main content provided by a first application, and displaying, on the sub area, a first sub content associated with the first main content, receiving a user gesture input on the main area, and in response to receiving the user gesture, displaying, on the main area, a second main content provided by a second application, and displaying, on the sub area, a second sub content associated with the second main content.

Abstract: A mobile device is provided. The mobile device includes a body of a bangle type configured to be worn on a user body, a display mounted in the body, a motion sensor configured to detect a motion, a storage configured to store control information which is differently set according to a motion state, and, when a motion is detected by the motion sensor, a controller configured to change a screen of the display according to control information corresponding to the detected motion. Accordingly, the mobile device is easily carried and used.

Abstract: A method of changing screens in an apparatus including multiple touch screens and an apparatus are provided. The method includes displaying a first screen in a first touch screen; displaying a second screen in a second touch screen; detecting multiple touches in the first touch screen; detecting continuous movements of the multiple touches from the first touch screen to the second touch screen; and changing the second screen of the second touch screen in response to the continuous movements of the multiple touches.

Abstract: Provided are a mobile terminal and a method operating the mobile terminal. The method includes: receiving a user input; performing a first operation corresponding to the user input; successively receiving the user input for a predetermined number of times or more within a predetermined time period; and performing a second operation based on a number of the successively received user input, wherein the second operation is set in advance in relation to the first operation.

Abstract: A flexible display apparatus configured to sense deformation of the flexible display apparatus, control display of an object displayed on the flexible display apparatus based on the deformation, and execute operations based on the displayed object.

Abstract: A flexible display apparatus includes a flexible display, a sensor which senses bending of the flexible display, and a controller which determines a screen activation region and a screen inactivation region from among a plurality of display regions of the flexible display based on the sensed bending, and displays a predetermined screen on the screen activation region.

Abstract: A content display method of a user terminal device including a bended touch screen divided into a main area and a sub area, includes displaying, on the main area, a first main content provided by a first application, and displaying, on the sub area, a first sub content associated with the first main content, receiving a user gesture input on the main area, and in response to receiving the user gesture, displaying, on the main area, a second main content provided by a second application, and displaying, on the sub area, a second sub content associated with the second main content.

Abstract: A flexible display apparatus includes a flexible display, a sensor which senses bending of the flexible display, and a controller which determines a screen activation region and a screen inactivation region from among a plurality of display regions of the flexible display based on the sensed bending, and displays a predetermined screen on the screen activation region.

Abstract: A transparent display apparatus is provided. The transparent display apparatus includes a transparent display which displays information, a sensor which senses background information in a first direction, and a controller configured to modify a display state of the displayed information on the transparent display based on the sensed background information.