Provided in the present invention is a display device which can improve the reception rate that a data driving unit normally receives a signal transmitted from a timing control unit. The display device comprises: a timing control unit generating an image signal including pre-emphasis voltage; a data driving unit for generating a plurality of data signals by receiving the image signal and for supplying information on whether the image signal is normally received, to the timing control unit; and a display panel receiving the data signals and displaying an image corresponding thereto. The timing control unit increases a level of the pre-emphasis voltage when the data driving unit does not normally receives the image signal.
