Invention Grant
US07972920B2 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
有权
半导体存储器件及其制造方法,制造垂直MISFET和垂直MISFET的方法以及半导体器件和半导体器件的制造方法
- Patent Title: 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
- Patent Title (中): 半导体存储器件及其制造方法,制造垂直MISFET和垂直MISFET的方法以及半导体器件和半导体器件的制造方法
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Application No.: US12700344Application Date: 2010-02-04
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Publication No.: US07972920B2Publication Date: 2011-07-05
- Inventor: Hiraku Chakihara , Kousuke Okuyama , Masahiro Moniwa , Makoto Mizuno , Keiji Okamoto , Mitsuhiro Noguchi , Tadanori Yoshida , Yasuhiko Takahshi , Akio Nishida
- Applicant: Hiraku Chakihara , Kousuke Okuyama , Masahiro Moniwa , Makoto Mizuno , Keiji Okamoto , Mitsuhiro Noguchi , Tadanori Yoshida , Yasuhiko Takahshi , Akio Nishida
- Applicant Address: JP Tokyo JP Kanagawa
- Assignee: Hitachi ULSI Systems Co., Ltd.,Renesas Electronics Corp.
- Current Assignee: Hitachi ULSI Systems Co., Ltd.,Renesas Electronics Corp.
- Current Assignee Address: JP Tokyo JP Kanagawa
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: JP2002-224254 20020731; JP2003-097210 20030331
- Main IPC: H01L21/8244
- IPC: H01L21/8244 ; G11C11/40

Abstract:
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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