发明授权
- 专利标题: Nonvolatile semiconductor memory device
- 专利标题(中): 非易失性半导体存储器件
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申请号: US11802463申请日: 2007-05-23
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公开(公告)号: US07709883B2公开(公告)日: 2010-05-04
- 发明人: Tamae Takano , Atsushi Tokuda , Ryota Tajima , Shunpei Yamazaki
- 申请人: Tamae Takano , Atsushi Tokuda , Ryota Tajima , Shunpei Yamazaki
- 申请人地址: unknown Atsugi-shi, Kanagawa-ken
- 专利权人: Semiconductor Energy Laboratory Co., Ltd
- 当前专利权人: Semiconductor Energy Laboratory Co., Ltd
- 当前专利权人地址: unknown Atsugi-shi, Kanagawa-ken
- 代理机构: Robinson Intellectual Property Law Office, P.C.
- 代理商 Eric J. Robinson
- 优先权: JP2006-153516 20060601
- 主分类号: H01L29/788
- IPC分类号: H01L29/788
摘要:
An object is to provide a nonvolatile semiconductor memory device which is excellent in a writing property and a charge retention property. In addition, another object is to provide a nonvolatile semiconductor memory device capable of reducing writing voltage. A nonvolatile semiconductor memory device includes a semiconductor layer or a semiconductor substrate including a channel formation region between a pair of impurity regions that are formed apart from each other, and a first insulating layer, a plurality of layers formed of different nitride compounds, a second insulating layer, and a control gate that are formed in a position which is over the semiconductor layer or the semiconductor substrate and overlaps with the channel formation region.
公开/授权文献
- US20070278563A1 Nonvolatile semiconductor memory device 公开/授权日:2007-12-06
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