- 专利标题: Semiconductor memory device and a method of manufacturing the same, a method of manufacturing a vertical MISFET and a vertical MISFET, and a method of manufacturing a semiconductor device and a semiconductor device
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申请号: US11418024申请日: 2006-05-05
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公开(公告)号: US20060202286A1公开(公告)日: 2006-09-14
- 发明人: Hiraku Chakihara , Kousuke Okuyama , Masahiro Moniwa , Makoto Mizuno , Keiji Okamoto , Mitsuhiro Noguchi , Tadanori Yoshida , Yasuhiko Takahshi , Akio Nishida
- 申请人: Hiraku Chakihara , Kousuke Okuyama , Masahiro Moniwa , Makoto Mizuno , Keiji Okamoto , Mitsuhiro Noguchi , Tadanori Yoshida , Yasuhiko Takahshi , Akio Nishida
- 优先权: JP2002-224254 20020731; JP2003-97210 20030331
- 主分类号: H01L29/76
- IPC分类号: H01L29/76
摘要:
Vertical MISFETs are formed over drive MISFETs and transfer MISFETs. The vertical MISFETs comprise rectangular pillar laminated bodies each formed by laminating a lower semiconductor layer (drain), an intermediate semiconductor layer, and an upper semiconductor layer (source), and gate electrodes formed on corresponding side walls of the laminated bodies with gate insulating films interposed therebetween. In each vertical MISFET, the lower semiconductor layer constitutes a drain, the intermediate semiconductor layer constitutes a substrate (channel region), and the upper semiconductor layer constitutes a source. The lower semiconductor layer, the intermediate semiconductor layer and the upper semiconductor layer are each comprised of a silicon film. The lower semiconductor layer and the upper semiconductor layer are doped with a p type and constituted of a p type silicon film.
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