Invention Grant
US09130029B2 Recessing and capping of gate structures with varying metal compositions
有权
具有不同金属成分的门结构的凹陷和封盖
- Patent Title: Recessing and capping of gate structures with varying metal compositions
- Patent Title (中): 具有不同金属成分的门结构的凹陷和封盖
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Application No.: US14181304Application Date: 2014-02-14
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Publication No.: US09130029B2Publication Date: 2015-09-08
- Inventor: Ruilong Xie , David V. Horak , Su Chen Fan , Pranatharthiharan Haran Balasubramanian
- Applicant: GLOBALFOUNDRIES Singapore Pte. Ltd.
- Applicant Address: SG Singapore
- Assignee: GLOBALFOUNDRIES Singapore Pte. Ltd.
- Current Assignee: GLOBALFOUNDRIES Singapore Pte. Ltd.
- Current Assignee Address: SG Singapore
- Agency: Ditthavong & Steiner, P.C.
- Main IPC: H01L29/66
- IPC: H01L29/66 ; H01L29/78 ; H01L21/28 ; H01L21/768

Abstract:
A approach for recessing and capping metal gate structures is disclosed. Embodiments include: forming a dummy gate electrode on a substrate; forming a hard mask over the dummy gate electrode; forming spacers on opposite sides of the dummy gate electrode and the hard mask; forming an interlayer dielectric (ILD) over the substrate adjacent the spacers; forming a first trench in the ILD down to the dummy gate electrode; removing the dummy gate electrode to form a second trench below the first trench; forming a metal gate structure in the first and second trenches; and forming a gate cap over the metal gate structure.
Public/Granted literature
- US20140159169A1 RECESSING AND CAPPING OF GATE STRUCTURES WITH VARYING METAL COMPOSITIONS Public/Granted day:2014-06-12
Information query
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