Advances in amorphous silicon technology for LCDs

Recent progress in amorphous silicon TFT LCDs is reviewed. Both the screen diagonals and pixel counts of TFT LCDs have increased over the past few years. In this period, remarkable progress has also been achieved in the viewing-angle characteristics. In this paper, the key issue of the next-generation TFT LCD panels is shown to be the aperture ratio. This is discussed from the viewpoint of the design rule reduction and the development of the scaling law.