a liquid crystal display device which favorably displays an image by eliminating irregularities of the γ characteristic for every manufactured liquid crystal panel . in the liquid crystal display device , when a power source is supplied thereto , a display control circuit installed therein reads out gradation voltage data corresponding to the liquid crystal panel stored in a rom connected to the display control circuit and sets gradation voltages in a gradation voltage setting circuit installed therein . further , upon receiving external control signals , the display control circuit sets gradation voltages in the gradation voltage setting circuit . when the set gradation voltages are inputted to a source driver section of the liquid crystal display device , the liquid crystal panel is driven -, and images are displayed thereby .