Patent ID: 9576961
Date: 2017-02-21
CPC Classifications: H01L

Claim:
1. A structure, comprising: a first gate structure comprising a sidewall spacer abutting raised source and drain regions; and a second gate structure comprising a sidewall spacer abutting raised source and drain regions, wherein: the sidewall spacer of the first gate structure has a same thickness as the sidewall spacer of the second gate structure; and the sidewall spacer of the first gate structure and the sidewall spacer of the second gate structure comprise a combination of a spacer material and a liner material, wherein the sidewall spacer of the first gate structure and the sidewall spacer of the second gate structure comprise the liner material over the spacer material on sidewalls of the first gate structure and the second gate structure, wherein a portion of the spacer material formed on the sidewall of the second gate structure is not covered by the liner material, and wherein the raised source and drain regions abutting the second gate structure directly abut sidewalls of the liner material of the second gate structure and the portion of the spacer material formed on the sidewall of the second gate structure which is not covered by the liner material.