Invention Grant
- Patent Title: FinFET thermal protection methods and related structures
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Application No.: US14319610Application Date: 2014-06-30
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Publication No.: US10170332B2Publication Date: 2019-01-01
- Inventor: Yu-Lien Huang
- Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
- Applicant Address: TW Hsin-Chu
- Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee Address: TW Hsin-Chu
- Agency: Haynes and Boone, LLP
- Main IPC: H01L29/00
- IPC: H01L29/00 ; H01L21/00 ; H01L21/3105 ; H01L29/66 ; H01L29/78 ; H01L29/10 ; H01L21/324

Abstract:
A method and structure for protecting high-mobility materials from exposure to high temperature processes includes providing a substrate having at least one fin extending therefrom. The at least one fin includes a dummy channel and source/drain regions. A dummy gate stack is formed over the dummy channel. A first inter-layer dielectric (ILD) layer is formed on the substrate including the fin. The first ILD layer is planarized to expose the dummy gate stack. After planarizing the first ILD layer, the dummy gate stack and the dummy channel are removed to form a recess, and a high-mobility material channel region is formed in the recess. After forming the high-mobility material channel region, contact openings are formed within a second ILD layer overlying the source/drain regions, and a low Schottky barrier height (SBH) material is formed over the source/drain regions.
Public/Granted literature
- US20150380558A1 FINFET THERMAL PROTECTION METHODS AND RELATED STRUCTURES Public/Granted day:2015-12-31
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