Invention Grant
- Patent Title: Gate metal patterning for tight pitch applications
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Application No.: US16010449Application Date: 2018-06-16
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Publication No.: US10755985B2Publication Date: 2020-08-25
- Inventor: Shogo Mochizuki , Alexander Reznicek , Joshua M. Rubin , 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: Hoffmann & Baron, LLP
- Agent Daniel P. Morris, Esq.
- Main IPC: H01L21/8238
- IPC: H01L21/8238 ; H01L29/06 ; H01L29/423 ; H01L29/786 ; H01L29/49 ; B82Y10/00 ; H01L29/40 ; H01L29/775 ; H01L27/092

Abstract:
Gate metal patterning techniques enable the incorporation of different work function metals in CMOS devices such as nanosheet transistor devices, vertical FETs, and FinFETs. Such techniques facilitate removal of gate metal from one region of a device without damage from over-etching to an adjacent region. The fabrication of CMOS devices with adjoining nFET/pFET gate structures and having very tight gate pitch is also facilitated. The techniques further enable the fabrication of CMOS devices with adjoining gate structures that require relatively long etch times for removal of gate metal therefrom, such as nanosheet transistors. A nanosheet transistor device including dual metal gates as fabricated allows tight integration.
Public/Granted literature
- US20180308768A1 GATE METAL PATTERNING FOR TIGHT PITCH APPLICATIONS Public/Granted day:2018-10-25
Information query
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