Method of fabricating semiconductor device
    1.
    发明授权
    Method of fabricating semiconductor device 失效
    制造半导体器件的方法

    公开(公告)号:US6146938A

    公开(公告)日:2000-11-14

    申请号:US340143

    申请日:1999-06-28

    摘要: A native film formed on the surface of a silicon substrate is removed. Arsenic is doped into the surface of the silicon substrate to form an n-type impurity diffusion layer as a lower capacitor electrode. A silicon nitride film as a capacitor insulating film is formed on the n-type impurity diffusion layer without growing any oxide film on the surface of the n-type impurity diffusion layer. An upper capacitor electrode is formed on the silicon nitride film.

    摘要翻译: 去除在硅衬底的表面上形成的天然膜。 砷被掺杂到硅衬底的表面中以形成作为下电容器电极的n型杂质扩散层。 在n型杂质扩散层上形成作为电容绝缘膜的氮化硅膜,而不会在n型杂质扩散层的表面上生长任何氧化膜。 在氮化硅膜上形成上部电容电极。

    Semiconductor device and semiconductor device manufacturing method
    7.
    发明授权
    Semiconductor device and semiconductor device manufacturing method 失效
    半导体器件和半导体器件制造方法

    公开(公告)号:US06600189B1

    公开(公告)日:2003-07-29

    申请号:US09598379

    申请日:2000-06-21

    IPC分类号: H01L27108

    摘要: A semiconductor device includes a semiconductor substrate having a trench on a surface thereof and an embedding member embedding the interior of the trench therewith. While the section of the trench when cut by a first plane perpendicular to the direction of the depth of the trench is defined as a first section and the section of the trench when cut by a second plane perpendicular to the direction of the depth of the trench and closer to the bottom of the trench than the first plane is defined as a second section, the area of the first section is smaller than that of the second section and a minimum radius of curvature of the first section is smaller than a minimum radius of curvature of the second section. As a result, it is possible to lessen the concentration of the electric field into the bottom of the trench.

    摘要翻译: 半导体器件包括在其表面上具有沟槽的半导体衬底和嵌入沟槽内部的嵌入构件。 虽然当垂直于沟槽深度方向的第一平面切割沟槽的部分被定义为第一部分,并且当垂直于沟槽深度方向的第二平面切割沟槽的部分时 并且比所述第一平面更靠近所述沟槽的底部被限定为第二部分,所述第一部分的面积小于所述第二部分的面积,并且所述第一部分的最小曲率半径小于所述第一部分的最小半径 第二部分的曲率。 结果,可以减小进入沟槽底部的电场的浓度。