发明授权
- 专利标题: LDMOS and CMOS integrated circuit and method of making
- 专利标题(中): LDMOS和CMOS集成电路及其制作方法
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申请号: US09817703申请日: 2001-03-26
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公开(公告)号: US06818494B1公开(公告)日: 2004-11-16
- 发明人: Zhizang Chen , Bao-Sung Bruce Yeh , S. Jonathan Wang , Cathy P. Peltier
- 申请人: Zhizang Chen , Bao-Sung Bruce Yeh , S. Jonathan Wang , Cathy P. Peltier
- 主分类号: H01L218238
- IPC分类号: H01L218238
摘要:
An integrated circuit (IC) is formed on a substrate. The IC has a first well having a first dopant concentration that includes a second conductivity low-voltage transistor. The IC also has a second well having a dopant concentration equal to the first dopant concentration that includes a first conductivity high-voltage transistor. In addition, the IC has a third well having a second dopant concentration of an opposite type than the first well that includes a first conductivity low-voltage transistor. The first conductivity low-voltage transistor and the second conductivity low-voltage transistor are created without a threshold voltage (Vt) implant.
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