Apparatus and method for driving a display device

摘要

An apparatus for driving a display device including a plurality of four color pixels is provided, which includes: an input unit receiving input three-color image signals; an image signal modifier converting the three-color image signals into output four-color image signals such that a maximum gray of the input three-color image signals is equal to a maximum gray of the output four-color image signals; and an output unit outputting the output four-color image signals.