Fundamental deterioration of picture quality for moving images displayed on LCDs and methods for improvement

摘要

Degradation of picture quality for moving images displayed on bold type displays such as TFT-LCDs and its improving methods are discussed. When moving images are displayed on TFT-LCD displays, which sustain light intensity in a field period of video signal, the image quality is degraded, or the images are perceived as blurred. The cause of the degradation is the sustained light. So picture quality improvement cannot be attained only by to fasten transient response time of LCDs. The improvement for this fundamental degradation is necessary. Two improving methods are described. Examples of the improvement and an objective measurement method of moving picture quality considering the degradation are introduced.