A display device includes a plurality of pixels, a serial-to-parallel converter (SPC), a plurality of digital-to-analog converters (DACs), a plurality of switches, and a controller. The pixels are arranged in rows and columns. The columns include a first column and an adjacent second column. The SPC generates parallelized pixel data based on serial pixel data sent by a graphics controller. The DACs are coupled to the SPC and include a first DAC corresponding to the first column and a second DAC corresponding to the second column. The switches include a first switch that includes a first input coupled directly to an output of the SPC, a second input coupled to an input of the first column, and an output coupled to an input of the second column. The controller selects pixel data on one of the first input and the second input for output by the first switch.