发明申请
US20070117331A1 Reliable high voltage gate dielectric layers using a dual nitridation process
有权
使用双重氮化工艺的可靠的高压栅极电介质层
- 专利标题: Reliable high voltage gate dielectric layers using a dual nitridation process
- 专利标题(中): 使用双重氮化工艺的可靠的高压栅极电介质层
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申请号: US11626624申请日: 2007-01-24
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公开(公告)号: US20070117331A1公开(公告)日: 2007-05-24
- 发明人: Rajesh Khamankar , Douglas Grider , Hiroaki Niimi , April Gurba , Toan Tran , James Chambers
- 申请人: Rajesh Khamankar , Douglas Grider , Hiroaki Niimi , April Gurba , Toan Tran , James Chambers
- 申请人地址: US TX Dallas 75251
- 专利权人: TEXAS INSTRUMENTS INCORPORATED
- 当前专利权人: TEXAS INSTRUMENTS INCORPORATED
- 当前专利权人地址: US TX Dallas 75251
- 主分类号: H01L21/336
- IPC分类号: H01L21/336 ; H01L29/76
摘要:
Dual gate dielectric layers are formed on a semiconductor substrate for MOS transistor fabrication. A first dielectric layer (30) is formed on a semiconductor substrate (10). A first plasma nitridation process is performed on said first dielectric layer. The first dielectric layer (30) is removed in regions of the substrate and a second dielectric layer (50) is formed in these regions. A second plasma nitridation process is performed on the first dielectric layer and the second dielectric. MOS transistors (160, 170) are then fabricated using the dielectric layers (30, 50).
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