INTEGRATED CIRCUIT SEMICONDUCTOR DEVICE WITH OVERLAY KEY AND ALIGNMENT KEY AND METHOD OF FABRICATING THE SAME
    2.
    发明申请
    INTEGRATED CIRCUIT SEMICONDUCTOR DEVICE WITH OVERLAY KEY AND ALIGNMENT KEY AND METHOD OF FABRICATING THE SAME 有权
    具有覆盖键和对准的集成电路半导体器件及其制造方法

    公开(公告)号:US20080203590A1

    公开(公告)日:2008-08-28

    申请号:US12111651

    申请日:2008-04-29

    IPC分类号: H01L23/544

    摘要: An integrated circuit semiconductor device including a cell region formed in a first portion of a silicon substrate, the cell region including a first trench formed in the silicon substrate, a first buried insulating layer filled in the first trench, a first insulating pattern formed over the silicon substrate, and a first conductive pattern formed over the first insulating pattern. An overlay key region is formed in a second portion of the silicon substrate and includes a second trench formed in the silicon substrate, a second insulating pattern formed over the silicon substrate and used as an overlay key, and a second conductive pattern formed over the second insulating pattern and formed by correcting overlay and alignment errors using the second insulating pattern. An alignment key region is formed in a third portion of the silicon substrate and includes a third trench formed in the silicon substrate and used as an alignment key, a second buried insulating layer formed in the third trench, and a third conductive pattern formed over the second buried insulating layer and the third trench.

    摘要翻译: 一种集成电路半导体器件,包括形成在硅衬底的第一部分中的单元区域,所述单元区域包括形成在所述硅衬底中的第一沟槽,填充在所述第一沟槽中的第一掩埋绝缘层,形成在所述第一沟槽上的第一绝缘图案 硅衬底和形成在第一绝缘图案上的第一导电图案。 覆盖键区域形成在硅衬底的第二部分中,并且包括在硅衬底中形成的第二沟槽,形成在硅衬底上并用作覆盖键的第二绝缘图案,以及形成在第二衬底上的第二导电图案 绝缘图案,并且通过使用第二绝缘图案校正覆盖和对准误差而形成。 对准键区域形成在硅衬底的第三部分中,并且包括形成在硅衬底中并用作对准键的第三沟槽,形成在第三沟槽中的第二掩埋绝缘层和形成在第三沟槽上的第三导电图案 第二掩埋绝缘层和第三沟槽。