A semiconductor substrate, for forming a circuit pattern of a semiconductor chip, comprised of a substrate, an insulating film formed on the substrate, and a semiconductor layer formed on the insulating film, wherein the semiconductor layer is isolated by the insulating film for every region formed with...http://www.google.de/patents/US20010007367?utm_source=gb-gplus-sharePatent US20010007367 - Semiconductor substrate, semiconductor device, and processes of production of same