Patent ID: 11908864
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. A semiconductor device including a static random access memory (SRAM), the SRAM comprising:
an n-channel fin field effect transistor (FinFET) having a first fin structure disposed over a semiconductor substrate;
a p-channel FinFET having a second fin structure disposed over the substrate;
a p-type well formed in the semiconductor substrate;
an n-type well formed in the semiconductor substrate; and
a carbon barrier region disposed at a boundary region in the semiconductor substrate between the p-type well and the n-type well,
wherein a bottom of each of the first and second fin structures includes carbon in an amount of 1×1018 atoms·cm−3 to 2×1019 atoms·cm−3.