Invention Grant
- Patent Title: Fin cut during replacement gate formation
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Application No.: US15608545Application Date: 2017-05-30
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Publication No.: US10224326B2Publication Date: 2019-03-05
- Inventor: Andrew M. Greene , Balasubramanian S. Pranatharthiharan , Sivananda K. Kanakasabapathy , John R. Sporre
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Tutunjian & Bitetto, P.C.
- Agent Vazken Alexanian
- Main IPC: H01L29/06
- IPC: H01L29/06 ; H01L27/088 ; H01L29/66 ; H01L29/78 ; H01L29/161 ; H01L21/308 ; H01L21/027 ; H01L21/8234 ; H01L21/8238 ; H01L27/12

Abstract:
A method is presented for forming a semiconductor structure. The method includes forming a plurality of vertical fins over a semiconductor layer formed over a substrate, depositing an oxide over the plurality of fins, and applying a cutting mask over a portion of the plurality of fins. The method further includes removing the oxide from the exposed portion of the plurality of fins, depositing a replacement gate stack, and etching portions of the replacement gate stack to remove exposed fins, the exposed fins forming recesses within the semiconductor layer. The method further includes depositing a spacer over the exposed fins and the recesses formed by the removed fins. A portion of the plurality of fins are cut during etching of the replacement gate stack and a portion of the oxide is removed before deposition of the replacement gate stack.
Public/Granted literature
- US20180122708A1 FIN CUT DURING REPLACEMENT GATE FORMATION Public/Granted day:2018-05-03
Information query
IPC分类: