Display device and its gamma correction method

摘要

RGB display data is sequentially divided and written into pixels of each of the RGB in a display device. The display device has a DA converter (150-1) selecting and outputting one of plurality of the gamma -correction voltages based on the sequentially divided RGB display data, the gamma -correction voltage switching circuit (160) selecting the gamma -correction voltage for each of the RGB by changing the first and second reference voltages for each of the RGB, and the switching circuit (180) selectively supplying the output of the DA converter (150-1) to the pixels of each of the RGB. The gamma -correction is individually performed for each of the RGB. The individual gamma -correction for each of the RGB can improve the reproducibility of colors without enlarging the circuit size.