发明授权
US06274441B1 Method of forming bitline diffusion halo under gate conductor ledge
失效
在栅极导体突起处形成位线扩散晕的方法
- 专利标题: Method of forming bitline diffusion halo under gate conductor ledge
- 专利标题(中): 在栅极导体突起处形成位线扩散晕的方法
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申请号: US09560073申请日: 2000-04-27
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公开(公告)号: US06274441B1公开(公告)日: 2001-08-14
- 发明人: Jack A. Mandelman , Ramachandra Divakaruni , William R. Tonti
- 申请人: Jack A. Mandelman , Ramachandra Divakaruni , William R. Tonti
- 主分类号: H01L2170
- IPC分类号: H01L2170
摘要:
A method for fabricating a MOSFET device including a halo implant comprising providing a semiconductor substrate, a gate insulator layer, a conductor layer, an overlying silicide layer, and an insulating cap; patterning and etching the silicide layer and the insulating cap; providing insulating spacers along sides of said silicide layer and insulating cap; implanting node and bitline N+ diffusion regions; patterning a photoresist layer to protect the node diffusion region and supporting PFET source and drain regions and expose the bitline diffusion region and NFET source and drain regions; etching exposed spacer material from the side of said silicide layer and insulating cap; implanting a P-type impurity halo implant into the exposed bitline diffusion region and supporting NFET source and drain regions; and stripping the photoresist layer and providing an insulating spacer along the exposed side of said silicide layer and insulating cap.
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