Invention Grant
- Patent Title: Spacer-last replacement metal gate flow and device
- Patent Title (中): 间隔最后更换金属浇道流量和装置
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Application No.: US14478494Application Date: 2014-09-05
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Publication No.: US09252245B1Publication Date: 2016-02-02
- Inventor: Murat Akarvardar , Rama Kambhampati
- Applicant: GLOBALFOUNDRIES Inc.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES INC.
- Current Assignee: GLOBALFOUNDRIES INC.
- Current Assignee Address: KY Grand Cayman
- Agency: Ditthavong & Steiner, P.C.
- Main IPC: H01L29/66
- IPC: H01L29/66 ; H01L27/088 ; H01L21/3065 ; H01L21/306 ; H01L29/45 ; H01L21/3105 ; H01L21/283

Abstract:
A methodology for spacer-last replacement metal gate (RMG) flow that exhibits reduced variability, and the resulting device are disclosed. Embodiments may include forming a dummy gate stack comprising a dummy nitride portion on a dummy oxide portion on a substrate, forming source/drain regions in the substrate at opposite sides of the dummy gate stack, depositing an insulating material over the source/drain regions, coplanar with the dummy gate stack, and replacing the dummy gate stack with a metal gate stack and spacers.
Information query
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