Kazuo Yoshikawa

Phase transition-type liquid-crystal projection display

Abstract An advanced-definition electrically writeable liquid-crystal projection display has been developed for information system applications. This display makes use of the bistable phase transition properties of nematic-cholesteric liquid crystals in an electric field. The bistable effect helps yield a high screen information content, and the absence of polarizers results in a bright screen image. The display is written solely by the electric field and is compact.

Self-shift plasma display panels with meander electrodes or meander channels

Two new types of self-shift plasma display panels with meander electrodes (ME-PDPs) and with meander channels (MC-PDPs) are described, both of which have new electrode configurations characterized by interdigital pairs of electrodes on each substrate. The panels have simple structures which do not require electrode crossovers, and therefore have good potentials for low cost compared with our former type of panel. Principles and characteristics of the two new types are discussed, and comparison between them leads to the conclusion that the ME-PDP, which can eliminate even the barrier structure by adopting meander electrode patterns, is superior for a high-resolution display.