Display apparatus and method of displaying teereof

Disclosed is a display device. The display device comprises: a storage unit for storing content; a display unit for displaying a thumbnail image of the content; and a control unit for successively changing the thumbnail image in a unit of a predetermined time period by using a plurality of images extracted from the content. Therefore, the display device provides convenience to enable a user to determine the contents of the content intuitively by variously displaying the thumbnail image.