Invention Grant
- Patent Title: Replacement metal gate including dielectric gate material
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Application No.: US14827510Application Date: 2015-08-17
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Publication No.: US09653573B2Publication Date: 2017-05-16
- Inventor: Linus Jang , Sivananda K. Kanakasabapathy , Sanjay C. Mehta , Soon-Cheon Seo , Raghavasimhan Sreenivasan
- Applicant: International Business Machines Corporation , GLOBALFOUNDRIES Inc.
- Applicant Address: US NY Armonk KY Grand Cayman
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION,GLOBALFOUNDRIES INC.
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION,GLOBALFOUNDRIES INC.
- Current Assignee Address: US NY Armonk KY Grand Cayman
- Agency: Cantor Colburn LLP
- Agent Steven Meyers
- Main IPC: H01L29/66
- IPC: H01L29/66 ; H01L21/8234 ; H01L21/283 ; H01L21/3065 ; H01L21/311

Abstract:
A method of fabricating a semiconductor device includes forming at least one semiconductor fin on a semiconductor substrate. A plurality of gate formation layers is formed on an etch stop layer disposed on the fin. The plurality of gate formation layers include a dummy gate layer formed from a dielectric material. The plurality of gate formation layers is patterned to form a plurality of dummy gate elements on the etch stop layer. Each dummy gate element is formed from the dielectric material. A spacer layer formed on the dummy gate elements is etched to form a spacer on each sidewall of dummy gate elements. A portion of the etch stop layer located between each dummy gate element is etched to expose a portion the semiconductor fin. A semiconductor material is epitaxially grown from the exposed portion of the semiconductor fin to form source/drain regions.
Public/Granted literature
- US20150357434A1 REPLACEMENT METAL GATE INCLUDING DIELECTRIC GATE MATERIAL Public/Granted day:2015-12-10
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