发明授权
US6110822A Method for forming a polysilicon-interconnect contact in a TFT-SRAM
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在TFT-SRAM中形成多晶硅 - 互连触点的方法
- 专利标题: Method for forming a polysilicon-interconnect contact in a TFT-SRAM
- 专利标题(中): 在TFT-SRAM中形成多晶硅 - 互连触点的方法
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申请号: US47539申请日: 1998-03-25
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公开(公告)号: US6110822A公开(公告)日: 2000-08-29
- 发明人: Kuo-Ching Huang , Yean-Kuen Fang , Mong-Song Liang , Dun-Nian Yaung
- 申请人: Kuo-Ching Huang , Yean-Kuen Fang , Mong-Song Liang , Dun-Nian Yaung
- 申请人地址: TWX Hsin-Chu
- 专利权人: Taiwan Semiconductor Manufacturing Company
- 当前专利权人: Taiwan Semiconductor Manufacturing Company
- 当前专利权人地址: TWX Hsin-Chu
- 主分类号: H01L21/20
- IPC分类号: H01L21/20 ; H01L21/768 ; H01L21/8244 ; H01L27/11 ; H01L21/44 ; H01L21/00 ; H01L21/84 ; H01L21/3205 ; H01L21/4763
摘要:
A method of forming a contact in a thin film transistor with a gate electrode and an interconnect formed on a substrate, in an SRAM device comprises the following steps. Form a gate oxide layer over device. Form a split amorphous silicon layer over gate oxide layer. Form a cap layer over split amorphous silicon layer. Form a contact opening down to interconnect. Form contact metallization in opening on the surface of interconnect either as a blanket titanium layer followed by rapid thermal anneal to form a silicide and stripping unreacted titanium or by selective formation of a tungsten metal silicide in the opening. Strip cap layer from device. Form a second amorphous silicon layer on split silicon layer. Recrystallize silicon layers to form a polysilicon channel layer from amorphous silicon layers. Dope regions of polysilicon channel layer aside from a channel region above gate electrode.
公开/授权文献
- USD375855S Seat for a stool 公开/授权日:1996-11-26
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