Display driving apparatus and method for controlling output gray voltage level

摘要

A display driving apparatus and method adjusts output gray voltage levels applied to a display driving apparatus that converts input data into a corresponding output voltage and displays an image. The driving method includes generating a plurality of gray voltages N times more than the number of output gray voltages representing voltages between a maximum value and a minimum value of the output voltage required to represent the input data as the image; selecting a plurality of output gray voltages required to represent the image, from among the gray voltages N times more than the output gray levels, in response to a selection signal; and decoding the input data using the selected output gray voltages and generating the output voltage. The display driving apparatus and method reduce distortion of an output image without increasing the size of the entire circuit.