An organic light emitting display device, including a display panel including red, green, first blue, and second blue sub-pixels, a data drive unit configured to receive an image signal and output data output signals, a de-multiplexer circuit configured to distribute data output signals to the data lines connected to the red, green, and the first blue sub-pixels, in response to receiving a first blue drive selection signal, or to the data lines connected to the red, green, first blue, and the second blue sub-pixels, in response to receiving a mixed drive selection signal, and a control unit configured to process a raw image data into the image signal, provide the image signal to the data drive unit, and provide the first blue drive selection signal or the mixed drive selection signal to the de-multiplexer circuit in a frame unit of the raw image data.