Microdisplays, which offers displays with small size, low power, big image, and a bright future, are particular useful for low power mobile personal communication and information display. Among all possible technologies, active matrix addressed liquid crystal displays using CMOS circuit fabricated in single-crystal silicon is presently the best approach for these microdisplays. A personal view on the microdisplay advantages and possible opportunities is summarized. A detailed description on the leading Kopin monochrome and color virtual displays is given.