SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME
    1.
    发明申请
    SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME 有权
    半导体器件及其制造方法

    公开(公告)号:US20080042173A1

    公开(公告)日:2008-02-21

    申请号:US11839387

    申请日:2007-08-15

    CPC classification number: H01L21/28088 H01L29/4966 H01L29/78

    Abstract: A MOS transistor includes a substrate, source/drain regions formed at portions of the substrate, and a channel region formed between the source/drain regions. The MOS transistor further includes a gate structure having a gate insulation layer pattern and a gate electrode formed on the channel region. The gate electrode includes a first gate conductive layer pattern and a second gate conductive layer pattern. The first gate conductive layer pattern has a nitrogen concentration gradient gradually increasing from a lower portion of the first gate conductive layer pattern to an upper portion of the first gate conductive layer pattern. The second gate conductive layer pattern includes a material having a resistance substantially lower than a resistance of the first gate conductive layer pattern.

    Abstract translation: MOS晶体管包括衬底,形成在衬底的部分处的源极/漏极区域和形成在源极/漏极区域之间的沟道区域。 MOS晶体管还包括具有栅极绝缘层图案的栅极结构和形成在沟道区上的栅电极。 栅电极包括第一栅极导电层图案和第二栅极导电层图案。 第一栅极导电层图案具有从第一栅极导电层图案的下部逐渐增加到第一栅极导电层图案的上部的氮浓度梯度。 第二栅极导电层图案包括具有基本上低于第一栅极导电层图案的电阻的电阻的材料。

Patent Agency Ranking