Patent ID: 6326267
Filing Date: 2001-12-04
Classification: H01L

Abstract:
A method of forming a semiconductor device having a first portion and a second portion, comprising:forming a first set of element isolating regions in said first portion and a second set of element isolating regions in said second portion;forming a first insulating film on said first portion which is uncovered by said first set of element isolating regions;forming a first conductive film on an entire surface of said first portion and said second portion;selectively removing said first conductive film of said first portion while remaining said first conductive film of said second portion to form a plurality of conductive stripes on said first portion, each of said conductive stripes extending in parallel to said element isolating region to position over a corresponding part of said first portion defined by said element isolating regions;forming a second insulating film on said conductive stripes of said first portion and on said first conductive film of said second portion; andremoving said second insulating film and said first conductive film of said second portion to expose said semiconductor substrate uncovered by said second set of element isolating regions of said second portion.