The major causes of deterioration of moving picture quality of displays are laid in temporal responses of the displays. They are divided into two categories: temporal characteristics of display materials, and driving method or displaying method of color or gray-scale. As examples of the latter, motion blur is caused by hold-type displaying of TFT-LCDs, dynamic false contour artifact is caused by sub-field method of PDPs, and color breakup is caused by field-sequential color displaying. There are two methods as basic approach of the improvement: to make displayed light close to an impulse emission like CRTs and use of motion compensation.
