Patent ID: 11908866
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. The method of claim 17, wherein:
the first p-type work function layer is removed from over the first semiconductor channel by performing a first masking operation the forms a first mask opening and etching the first p-type work function layer exposed by the first mask opening; and
the second p-type work function layer is removed from over the first semiconductor channel and the second semiconductor channel by performing a second masking operation that forms a second mask opening and a third mask opening and etching the second p-type work function layer exposed by the second mask opening and third mask opening, wherein the second mask opening is spaced a distance from the third mask opening along the first direction, such that the second mask opening does not overlap the third mask opening.