Patent ID: 6080612
Filing Date: 2000-06-27
Classification: H01L

Abstract:
A method of forming, on an ultra-thin SOI substrate, an ESD protected device, comprising:preparing isolated active areas on a single crystal silicon substrate, including forming insulated areas thereon isolating the active areas from one another;doping the isolated active areas with dopants to form selectively conductive areas in the isolated active areas;growing, epitaxially, a silicon layer over selected areas of each isolated active area; andafter growing the silicon layer over the isolate active areas, heating the substrate to redistribute the dopant from the doped, selectively conductive areas of each isolated active area throughout the epitaxially grown silicon layer resulting in doped silicon areas which are a combination of the doped selectively conductive areas and the epitaxially grown silicon to increase the current handling capacity of the combined areas, whereby ESD protection is provided for active devices formed on the substrate.