Method for fabricating capacitor utilizes a sacrificial pattern enclosing the upper outer walls of the storage nodes
    8.
    发明授权
    Method for fabricating capacitor utilizes a sacrificial pattern enclosing the upper outer walls of the storage nodes 失效
    用于制造电容器的方法利用包围存储节点的上外壁的牺牲图案

    公开(公告)号:US08048757B2

    公开(公告)日:2011-11-01

    申请号:US13069290

    申请日:2011-03-22

    IPC分类号: H01L21/20

    摘要: A method for fabricating a capacitor includes forming an isolation layer over a cell region and a peripheral region of a substrate. The isolation layer forms a plurality of open regions in the cell region. Storage nodes are formed on surfaces of the open regions. An upper portion of the isolation layer is etched to expose upper outer walls of the storage nodes. A sacrificial pattern is formed over the isolation layer to enclose the upper outer walls of the storage nodes. The isolation layer in the peripheral region is etched to expose side portions of the resulting structure obtained after forming the sacrificial pattern in the cell region. With the sacrificial pattern supporting the storage nodes, the isolation layer in the cell region is removed. The sacrificial pattern is then removed.

    摘要翻译: 制造电容器的方法包括在衬底的单元区域和周边区域上形成隔离层。 隔离层在单元区域中形成多个开放区域。 存储节点形成在开放区域的表面上。 蚀刻隔离层的上部以露出存储节点的上部外壁。 在隔离层上形成牺牲图案以封闭存储节点的上外壁。 对外围区域中的隔离层进行蚀刻,以在单元区域中形成牺牲图案之后获得的所得结构的侧面露出。 利用支持存储节点的牺牲图案,移除单元区域中的隔离层。 然后去除牺牲图案。

    METHOD FOR FABRICATING CAPACITOR
    9.
    发明申请
    METHOD FOR FABRICATING CAPACITOR 失效
    电容器制作方法

    公开(公告)号:US20110171807A1

    公开(公告)日:2011-07-14

    申请号:US13069290

    申请日:2011-03-22

    IPC分类号: H01L21/02

    摘要: A method for fabricating a capacitor includes forming an isolation layer over a cell region and a peripheral region of a substrate. The isolation layer forms a plurality of open regions in the cell region. Storage nodes are formed on surfaces of the open regions. An upper portion of the isolation layer is etched to expose upper outer walls of the storage nodes. A sacrificial pattern is formed over the isolation layer to enclose the upper outer walls of the storage nodes. The isolation layer in the peripheral region is etched to expose side portions of the resulting structure obtained after forming the sacrificial pattern in the cell region. With the sacrificial pattern supporting the storage nodes, the isolation layer in the cell region is removed. The sacrificial pattern is then removed.

    摘要翻译: 制造电容器的方法包括在衬底的单元区域和周边区域上形成隔离层。 隔离层在单元区域中形成多个开放区域。 存储节点形成在开放区域的表面上。 蚀刻隔离层的上部以露出存储节点的上部外壁。 在隔离层上形成牺牲图案以封闭存储节点的上外壁。 对外围区域中的隔离层进行蚀刻,以在单元区域中形成牺牲图案之后获得的所得结构的侧面露出。 利用支持存储节点的牺牲图案,移除单元区域中的隔离层。 然后去除牺牲图案。