The present invention relates to a display device and to an method for operating same and more particularly, to a method for producing advertisement content using a display device and to the display device for the same, which enable a user to accurately and quickly produce advertisement content and display the produced advertisement content in the case where advertisement content is displayed by using the display device as signage. The present invention generates first content included in the advertisement content, generates second content included in the advertisement content, sets the execution time of the first and second content, and stores the advertisement content including the first content, the second content, and the setting information. Accordingly, the display device can display a protection screen for preventing an afterimage screen or burn-in which may occur while displaying an advertisement screen on the display device for a long time, thereby protecting the display unit while maximizing information delivery to the user.