Semiconductor device
    81.
    发明申请
    Semiconductor device 失效
    半导体器件

    公开(公告)号:US20070241389A1

    公开(公告)日:2007-10-18

    申请号:US11783934

    申请日:2007-04-13

    IPC分类号: H01L29/76

    摘要: A semiconductor device includes a semiconductor substrate, a plurality of nonvolatile memory cells provided on the semiconductor substrate, each of the plurality of nonvolatile memory cells comprising a first insulating film provided on the semiconductor substrate, a charge storage layer provided on the first insulating film, a control gate electrode provided above the charge storage layer, a second insulating film provided between the control gate electrode and the charge storage layer, the second insulating film between adjacent charge storage layers including a first region having permittivity lower than that of the second insulating film on a top surface of the charge storage layer in a cross-section view of a channel width direction of the nonvolatile memory cell, and the first region having composition differing from that of the second insulating film on the top surface of the charge storage layer.

    摘要翻译: 半导体器件包括半导体衬底,设置在半导体衬底上的多个非易失性存储单元,所述多个非易失性存储单元中的每一个包括设置在所述半导体衬底上的第一绝缘膜,设置在所述第一绝缘膜上的电荷存储层, 设置在所述电荷存储层上方的控制栅电极,设置在所述控制栅电极和所述电荷存储层之间的第二绝缘膜,所述相邻电荷存储层之间的所述第二绝缘膜包括具有低于所述第二绝缘膜的介电常数的第一区域 在电荷存储层的顶表面上,以非易失性存储单元的沟道宽度方向的横截面视图,并且第一区域具有与电荷存储层的顶表面上的第二绝缘膜不同的组成。