Invention Grant
- Patent Title: Replacement metal gate
- Patent Title (中): 更换金属门
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Application No.: US14223612Application Date: 2014-03-24
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Publication No.: US09231080B2Publication Date: 2016-01-05
- Inventor: David V. Horak , Effendi Leobandung , Stefan Schmitz , Junli Wang
- 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: Law Offices of Ira D. Blecker, P.C.
- Main IPC: H01L29/78
- IPC: H01L29/78 ; H01L29/66

Abstract:
A replacement metal gate process which includes forming a fin on a semiconductor substrate; forming a dummy gate structure on the fin; removing the dummy gate structure to leave an opening that is to be filled with a permanent gate structure; depositing a high dielectric constant (high-k) dielectric material in the opening and over the fin; depositing a work function metal in the opening and over the fin so as to be in contact with the high-k dielectric material, the high k dielectric material and the work function metal only partially filling the opening; filling a remainder of the opening with an organic material; etching the organic material until it is partially removed from the opening; etching the work function metal until it is at a same level as the organic material; removing the organic material; and filling the opening with a metal until the opening is completely filled.
Public/Granted literature
- US20150270373A1 REPLACEMENT METAL GATE Public/Granted day:2015-09-24
Information query
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