发明授权
US5891770A Method for fabricating a high bias metal oxide semiconductor device
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高偏压金属氧化物半导体器件的制造方法
- 专利标题: Method for fabricating a high bias metal oxide semiconductor device
- 专利标题(中): 高偏压金属氧化物半导体器件的制造方法
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申请号: US98397申请日: 1998-06-17
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公开(公告)号: US5891770A公开(公告)日: 1999-04-06
- 发明人: Jia-Sheng Lee
- 申请人: Jia-Sheng Lee
- 申请人地址: TWX
- 专利权人: United Microelectronics Corp.
- 当前专利权人: United Microelectronics Corp.
- 当前专利权人地址: TWX
- 优先权: TWX87106848 19980504
- 主分类号: H01L21/762
- IPC分类号: H01L21/762 ; H01L21/8238
摘要:
A method for fabricating a high bias metal oxide semiconductor device includes using a trench structure instead of the conventional field oxide layer, constructing a structure with a vertical voltage gradient and performing punch implantation and threshold voltage implantation under a doped N.sup.- region and a doped P.sup.- region to increase the channel length.
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