Invention Grant
US07709336B2 Metal hard mask method and structure for strained silicon MOS transistors
有权
应变硅MOS晶体管的金属硬掩模方法和结构
- Patent Title: Metal hard mask method and structure for strained silicon MOS transistors
- Patent Title (中): 应变硅MOS晶体管的金属硬掩模方法和结构
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Application No.: US11321767Application Date: 2005-12-28
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Publication No.: US07709336B2Publication Date: 2010-05-04
- Inventor: Xian J. Ning , Hanming Wu , John Chen
- Applicant: Xian J. Ning , Hanming Wu , John Chen
- Applicant Address: CN Shanghai
- Assignee: Semiconductor Manufacturing International (Shanghai) Corporation
- Current Assignee: Semiconductor Manufacturing International (Shanghai) Corporation
- Current Assignee Address: CN Shanghai
- Agency: Townsend and Townsend and Crew LLP
- Main IPC: H01L21/336
- IPC: H01L21/336

Abstract:
A semiconductor integrated circuit device. The device has a semiconductor substrate and a dielectric layer overlying the semiconductor substrate. The device also has a gate structure including edges. A metal hard mask layer is overlying the gate structure. A dielectric layer is formed sidewall spacers on the edges of the gate structure to protect the gate structure including the edges. An exposed portion of the metal hard mask layer is overlying the gate structure. A silicon germanium fill material is provided in an etched source region and an etched drain region. The etched source region and the etched drain region are each coupled to the gate structure. The device has a strained channel region between the filled source region and the filled drain region from at least the silicon germanium material formed in the etched source region and the etched drain region. An electrical connection is coupled to the metal hard mask overlying the gate structure. Optionally, the device has a second metal layer overlying the metal hard mask.
Public/Granted literature
- US20060194395A1 Metal hard mask method and structure for strained silicon MOS transistors Public/Granted day:2006-08-31
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