Patent ID: 11895819
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. The structure of claim 12 further comprising a second transistor comprising:
a second gate stack over the semiconductor substrate;
a second gate spacer on a sidewall of the second gate stack; and
a second epitaxy region aside of the second gate stack, wherein the second epitaxy region comprises:
a second lower portion having the conductive type, wherein the second lower portion has the first doping concentration; and
a second upper portion having a third doping concentration of the conductivity type, wherein the third doping concentration is higher than the first doping concentrate, and the second upper portion extends to a position that is vertically aligned to a second nearest outer edge of the second gate spacer.