Crosstalk between adjacent discharge cells is reduced for a stable sustain discharge. A plasma display panel has scan electrodes and sustain electrodes arranged so that the positions of the corresponding scan electrode and sustain electrode are alternately interchanged in each display electrode pair, and image signal processing circuit converts an image signal into image data indicating light emission and no light emission in each discharge cell in each subfield. The image signal processing circuit generates the image data so that a combination of image data is avoided. One of two adjacent discharge cells having side-by-side scan electrodes is lit and the other of the discharge cells is unlit in one subfield of a plurality of subfields forming one field, and the one of the discharge cells is unlit and the other of the discharge cells is lit in a subfield after the one subfield in the same field.