Patent ID: 8854315

Claim:
A display device comprising: a first touch screen module providing a first touch screen to display a first object; a second touch screen module providing a second touch screen to display a second object, wherein the second touch screen module is physically separated from the first touch screen module; and a controller configured to: control the first and second touch screens, receive a first touch to the first object on the first touch screen, receive a second touch to the second object after receiving the first touch, without dragging the first object to a position on the second touch screen, wherein the first touch to the first object is maintained during a time when the second touch to the second object on the second touch screen is received, wherein the first touch and the second touch is a sequential touch on a separated touch screen module respectively, execute a function corresponding to the second object by associating the first object to the function corresponding to the second object when the second touch is applied to the second object displayed on the second touch screen while the first touch is maintained to the first object displayed on the first touch screen, and display an execute screen of the function on the second touch screen, wherein the first object used in the executing of the function is displayed in the first touch screen during the executing of the function.