Patent ID: 9136182
Filing Date: 2015-09-15
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device, the method comprising: forming a dummy gate structure on a substrate, the dummy gate structure comprising a dummy gate member; forming two first-type spacers such that the dummy gate member is positioned between the two first-type spacers; forming two second-type spacers such that the two first-type spacers and the dummy gate member are positioned between the two second-type spacers; forming two third-type spacers such that the two second-type spacers, the two first-type spacers, and the dummy gate member are positioned between the two third-type spacers; performing etch to substantially completely remove the two third-type spacers and to at least partially remove the two second-type spacers; removing at least a first portion of the dummy gate member to form a space between remaining portions of the two first-type spacers; and providing a metal material in the space for forming a metal gate member.