Invention Grant
- Patent Title: Methods, apparatus and system for local isolation formation for finFET devices
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Application No.: US15075557Application Date: 2016-03-21
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Publication No.: US09722053B1Publication Date: 2017-08-01
- Inventor: Min Gyu Sung , Ruilong Xie , Hoon Kim , Chanro Park , Sukwon Hong
- Applicant: GLOBALFOUNDRIES INC.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES INC.
- Current Assignee: GLOBALFOUNDRIES INC.
- Current Assignee Address: KY Grand Cayman
- Agency: Williams Morgan, P.C.
- Main IPC: H01L29/66
- IPC: H01L29/66 ; H01L29/16 ; H01L29/161 ; H01L29/06 ; H01L29/10

Abstract:
At least one method, apparatus and system are disclosed for forming a fin field effect transistor (finFET) while reducing oxidization and fin critical dimension loss. A plurality of fins of a transistor are formed. A hard mask layer is formed on top of the fins. A first liner layer is formed over the fins and the hard mask layer. A partial deposition process is performed for depositing a first insulation material in a first portion of a channel between the fins. A second liner layer is formed above the fins, the first insulation material, and the channel. A second insulation material is deposited above the second liner layer. A fin reveal process is performed for removing the second insulation material to a predetermined height. An etch process is performed for removing the hard mask layer and the first and second liner layers above the predetermined height.
Information query
IPC分类: