Disclosed are a display device and a method for controlling the same. The method for controlling a display device according to the present invention comprises the steps of: displaying an execution screen of an application which is divided into a plurality of regions; extracting source information related to a region, from among the plurality of regions, to be transmitted to a peripheral device; and transmitting the extracted source information to the peripheral device. Accordingly, the display device can more efficiently provide multi-UI services between a plurality of peripheral devices.