Shallow trench isolation spacer for weff improvement
    1.
    发明授权
    Shallow trench isolation spacer for weff improvement 失效
    浅沟槽隔离垫片,用于纱布改良

    公开(公告)号:US06566230B1

    公开(公告)日:2003-05-20

    申请号:US10032630

    申请日:2001-12-27

    IPC分类号: H03L2176

    CPC分类号: H01L21/76224

    摘要: A method for performing trench isolation during semiconductor device fabrication is disclosed. The method includes patterning a hard mask to define active areas and isolations areas on a substrate, and forming spacers along edges of the hard mask. Trenches are then formed in the substrate using the spacers as a mask, thereby increasing the width of the substrate under the active areas and increasing Weff for the device.

    摘要翻译: 公开了一种用于在半导体器件制造期间执行沟槽隔离的方法。 该方法包括图案化硬掩模以限定衬底上的有源区和隔离区,以及沿着硬掩模的边缘形成间隔物。 然后使用间隔件作为掩模在衬底中形成沟槽,从而增加衬底在有源区域下的宽度并增加器件的Weff。