A display device including plural pixels, plural scan lines for applying scan signals to the pixels, plural first data lines for transmitting first data currents to the pixels, a scan driver for outputting the scan signals, a demultiplexer including plural demultiplexing circuits for demultiplexing second data currents into the first data currents, and for transmitting the first data currents to the plural first data lines, and a data driver for transmitting the second data currents. A demultiplexing circuit demultiplexes one of the second data currents into at least two first data currents, and transmits them to at least two first data lines. The number of the at least two first data lines is an integer multiple of the number of sub-pixels in each pixel. A display device and a demultiplexer having a simple structure data driver, where a stationary pattern due to demultiplexing is reduced or eliminated, can be provided.