Disclosed is a method for executing at least one application by a display device having a touch screen. An application execution method according to the present invention may include the steps of: displaying a window for executing an application in each of a plurality of areas arranged on a touch screen; displaying a button on at least one boundary line dividing the plurality of areas; receiving an input for selecting the button; and displaying, in a predetermined area, on the basis of the received input, a list of at least one application executed in the predetermined area among the plurality of areas.