DISPLAY DEVICE AND CONTROL METHOD THEREOF

A display device includes a signal receiver configured to receive an image signal; a signal processor configured to process the image signal received by the signal receiver; a display unit configured to display an image corresponding to the image signal processed by the signal processor; and a controller configured to control the signal processor to play back an image based on an image file executed by the playback program, and to display a subtitle corresponding to the image of the image file on the display unit if a subtitle corresponding to the image of the image file cannot be displayed by the playback program. Thus, in an exemplary embodiment, even if a subtitle corresponding to an image is not displayable by a playback program by which the image is played back, it is possible to provide a corresponding subtitle.