An integrated circuit device having a display memory which stores data for at least one frame from among image information displayed in a display panel which has a plurality of scan lines and a plurality of data lines, the display memory including a plurality of wordlines, a plurality of bitlines, a plurality of memory cells, and a wordline control circuit; and the wordline control circuit selecting an identical wordline N times (N is an integer larger than one) from among the wordlines in one horizontal scan period of the display panel.