发明申请
- 专利标题: Method for fabricating semiconductor device
- 专利标题(中): 制造半导体器件的方法
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申请号: US11187958申请日: 2005-07-25
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公开(公告)号: US20060035418A1公开(公告)日: 2006-02-16
- 发明人: Koji Yoshida , Keita Takahashi , Fumihiko Noro , Masatoshi Arai , Nobuyoshi Takahashi
- 申请人: Koji Yoshida , Keita Takahashi , Fumihiko Noro , Masatoshi Arai , Nobuyoshi Takahashi
- 专利权人: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 当前专利权人: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 优先权: JP2004-236714 20040816
- 主分类号: H01L21/84
- IPC分类号: H01L21/84 ; H01L21/00
摘要:
First, on a semiconductor region of a first conductivity type, a trapping film is formed which stores information by accumulating charges. Then, the trapping film is formed with a plurality of openings, and impurity ions of a second conductivity type are implanted into the semiconductor region from the formed openings, thereby forming a plurality of diffused layers of the second conductivity type in portions of the semiconductor region located below the openings, respectively. An insulating film is formed to cover edges of the trapping film located toward the openings, and then the semiconductor region is subjected to a thermal process in an atmosphere containing oxygen to oxidize upper portions of the diffused layers. Thereby, insulating oxide films are formed in the upper portions of the diffused layers, respectively. Subsequently, a conductive film is formed over the trapping film including the edges thereof to form an electrode.
公开/授权文献
- US07951679B2 Method for fabricating semiconductor device 公开/授权日:2011-05-31
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