发明申请
- 专利标题: NONVOLATILE SEMICONDUCTOR MEMORY DEVICE AND METHOD FOR MANUFACTURING SAME
- 专利标题(中): 非易失性半导体存储器件及其制造方法
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申请号: US12408183申请日: 2009-03-20
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公开(公告)号: US20090242968A1公开(公告)日: 2009-10-01
- 发明人: Takashi MAEDA , Yoshihisa Iwata
- 申请人: Takashi MAEDA , Yoshihisa Iwata
- 申请人地址: JP Tokyo
- 专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人地址: JP Tokyo
- 优先权: JP2008-080526 20080326
- 主分类号: H01L29/792
- IPC分类号: H01L29/792 ; H01L21/336
摘要:
In a nonvolatile semiconductor memory device, a stacked body is formed by alternately stacking dielectric films and conductive films on a silicon substrate and a plurality of through holes extending in the stacking direction are formed in a matrix configuration. A shunt interconnect and a bit interconnect are provided above the stacked body. Conductor pillars are buried inside the through holes arranged in a line immediately below the shunt interconnect out of the plurality of through holes, and semiconductor pillars are buried inside the remaining through holes. The conductive pillars are formed from a metal, or low resistance silicon. Its upper end portion is connected to the shunt interconnect and its lower end portion is connected to a cell source formed in an upper layer portion of the silicon substrate.
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