Patent ID: 6127248
Filing Date: 2000-10-03
Classification: H01L,Y10S

Abstract:
A fabrication method for a semiconductor device, comprising:providing a semiconductor substrate having a first region and a second region;forming a gate insulating film on the substrate;forming a conductive layer on the gate insulating film and patterning the conductive layer, for thereby forming a first gate and a second gate on the first and second regions, respectively;forming impurity areas of an oxidation inhibitor in the first region at both sides of the first gate by,forming a mask over the second gate and the second region of the substrate, andion implanting the oxidation inhibitor only in the first region of the substrate;applying a re-oxidation process to the gate insulating film, for thereby forming each portion of the gate insulating film at both sides of the first gate thinner than each portion of the gate insulating film at both sides of the second gate; andrespectively forming a source/drain region at both sides of the first and second gates.