Invention Application
US20160086860A1 METHODS FOR MAKING ROBUST REPLACEMENT METAL GATES AND MULTI-THRESHOLD DEVICES IN A SOFT MASK INTEGRATION SCHEME
审中-公开
用于在软掩模集成方案中制造可靠的替代金属门和多阈值器件的方法
- Patent Title: METHODS FOR MAKING ROBUST REPLACEMENT METAL GATES AND MULTI-THRESHOLD DEVICES IN A SOFT MASK INTEGRATION SCHEME
- Patent Title (中): 用于在软掩模集成方案中制造可靠的替代金属门和多阈值器件的方法
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Application No.: US14495170Application Date: 2014-09-24
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Publication No.: US20160086860A1Publication Date: 2016-03-24
- Inventor: Balaji Kannan , Rekha Rajaram , Unoh Kwon
- Applicant: GLOBALFOUNDRIES INC.
- Main IPC: H01L21/8238
- IPC: H01L21/8238

Abstract:
A method of fabricating advanced multi-threshold field effect transistors using a replacement metal gate process. A first method includes thinning layers composed of multilayer film stacks and incorporating a portion of the remaining thinned film in some transistors. A second method includes patterning dopant materials for a high-k dielectric by using thinning layers composed of multilayer thin film stacks, or in other embodiments, by a single thinning layer.
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