发明授权
US6093602A Method to form polycide local interconnects between narrowly-spaced
features while eliminating stringers
失效
在窄间隔特征之间形成多晶硅局部互连的方法,同时消除桁条
- 专利标题: Method to form polycide local interconnects between narrowly-spaced features while eliminating stringers
- 专利标题(中): 在窄间隔特征之间形成多晶硅局部互连的方法,同时消除桁条
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申请号: US356007申请日: 1999-07-16
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公开(公告)号: US6093602A公开(公告)日: 2000-07-25
- 发明人: Weining Li , Lin Yung Tao , Ramachandramurthy Pradeep Yelehanka , Tin Tin Wee
- 申请人: Weining Li , Lin Yung Tao , Ramachandramurthy Pradeep Yelehanka , Tin Tin Wee
- 申请人地址: SGX Singapore
- 专利权人: Chartered Semiconductor Manufacturing Company
- 当前专利权人: Chartered Semiconductor Manufacturing Company
- 当前专利权人地址: SGX Singapore
- 主分类号: H01L21/768
- IPC分类号: H01L21/768 ; H01L21/8244 ; H01L27/11 ; H01L21/8242
摘要:
A method of fabricating local interconnects of polycide has been achieved. A substrate is provided. Narrowly spaced features, such as MOS transistor gates and polysilicon traces, are provided overlying the substrate. A dielectric layer is deposited overlying the substrate and the narrowly spaced features. The dielectric layer is patterned to form openings between the narrowly spaced features for planned contacts to the surface of the substrate. A doped polysilicon layer is deposited overlying the dielectric layer and filling the openings. The doped polysilicon layer is etched down to the top surface of the narrowly spaced features. The doped polysilicon layer remains in the spaces between the narrowly spaced features. A polycide layer is formed overlying the narrowly spaced features and the doped polysilicon layer. The polycide layer and the doped polysilicon layer are patterned to complete the contacts and create the local interconnects of polycide, and the integrated circuit device is completed.
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