In order to reduce the dither noise caused by the improvement of dynamic false contour(DFC) in plasma display panels(PDPs),a method using adaptive dither region and random dither combined with minor pixel separation(MPS) is proposed.The luminance distribution of DFC stripe is analyzed and the evaluated method for DFC is obtained according to human vision characteristics.The width of the dither region was computed and changed according to the evaluated results of DFC,and the random dither combine...