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    Semiconductor device
    5.
    发明授权
    Semiconductor device 失效
    半导体器件

    公开(公告)号：US07635890B2

    公开(公告)日：2009-12-22

    申请号：US11783934

    申请日：2007-04-13

    申请人： Yoshio Ozawa ,  Akihito Yamamoto ,  Masayuki Tanaka ,  Katsuaki Natori ,  Katsuyuki Sekine ,  Daisuke Nishida ,  Ryota Fujitsuka

    发明人： Yoshio Ozawa ,  Akihito Yamamoto ,  Masayuki Tanaka ,  Katsuaki Natori ,  Katsuyuki Sekine ,  Daisuke Nishida ,  Ryota Fujitsuka

    IPC分类号： H01L29/76

    CPC分类号： H01L29/7883 ,  H01L27/115 ,  H01L27/11521 ,  H01L29/42324

    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。

    SEMICONDUCTOR DEVICE
    6.
    发明申请
    SEMICONDUCTOR DEVICE 失效
    半导体器件

    公开(公告)号：US20080197403A1

    公开(公告)日：2008-08-21

    申请号：US12026942

    申请日：2008-02-06

    申请人： Yoshio OZAWA ,  Akihito Yamamoto ,  Katsuaki Natori ,  Masayuki Tanaka ,  Katsuyuki Sekine ,  Daisuke Nishida ,  Ryota Fujitsuka

    发明人： Yoshio OZAWA ,  Akihito Yamamoto ,  Katsuaki Natori ,  Masayuki Tanaka ,  Katsuyuki Sekine ,  Daisuke Nishida ,  Ryota Fujitsuka

    IPC分类号： H01L27/115

    CPC分类号： H01L21/28273 ,  H01L27/115 ,  H01L27/11521 ,  H01L29/512 ,  H01L29/513 ,  H01L29/66825 ,  H01L29/7881

    摘要： A semiconductor device includes a semiconductor substrate, and nonvolatile memory cells, each of the cells including a channel region having a channel length and a channel width, a tunnel insulating film, a floating gate electrode, a control gate electrode, an inter-electrode insulating film between the floating and control gate electrodes, and an electrode side-wall insulating film on side-wall surfaces of the floating and control gate electrodes, the electrode side-wall insulating film including first and second insulating films having first and second dielectric constants, the first dielectric constant being higher than the second dielectric constant, the second dielectric constant being higher than a dielectric constant of a silicon nitride film, the first insulating film being in a central region of a facing region between the floating and control gate electrodes, the second insulating region being in the both end regions of the facing region and protruding from the both end portions.

    摘要翻译： 半导体器件包括半导体衬底和非易失性存储单元，每个单元包括具有沟道长度和沟道宽度的沟道区，隧道绝缘膜，浮栅电极，控制栅电极，电极间绝缘 在浮置控制栅电极和控制栅极电极的侧壁表面之间的电极侧壁绝缘膜，电极侧壁绝缘膜包括具有第一和第二介电常数的第一和第二绝缘膜， 所述第一介电常数高于所述第二介电常数，所述第二介电常数高于氮化硅膜的介电常数，所述第一绝缘膜位于所述浮动栅极和控制栅电极之间的面对区域的中心区域中， 第二绝缘区域位于面对区域的两端区域中并从两端口突出 ons。