发明授权
- 专利标题: Semiconductor structure comprising field effect transistors with stressed channel regions and method of forming the same
- 专利标题(中): 包括具有应力沟道区域的场效应晶体管的半导体结构及其形成方法
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申请号: US11685847申请日: 2007-03-14
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公开(公告)号: US07608499B2公开(公告)日: 2009-10-27
- 发明人: Karla Romero , Sven Beyer , Jan Hoentschel , Rolf Stephan
- 申请人: Karla Romero , Sven Beyer , Jan Hoentschel , Rolf Stephan
- 申请人地址: US TX Austin
- 专利权人: Advanced Micro Devices, Inc.
- 当前专利权人: Advanced Micro Devices, Inc.
- 当前专利权人地址: US TX Austin
- 代理机构: Williams, Morgan & Amerson, P.C.
- 优先权: DE102006035666 20060731
- 主分类号: H01L21/8238
- IPC分类号: H01L21/8238
摘要:
A method of forming a semiconductor structure comprises providing a semiconductor substrate comprising a first transistor element and a second transistor element. Each of the first transistor element and the second transistor element comprises a gate electrode. A stressed material layer is deposited over the first transistor element and the second transistor element. The stressed material layer is processed to form from the stressed material layer sidewall spacers adjacent the gate electrode of the second transistor element and a hard mask covering the first transistor element. A pair of cavities is formed adjacent the gate electrode of the second transistor element. A pair of stress-creating elements is formed in the cavities and the hard mask is at least partially removed.
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