Profile and CD uniformity control by plasma oxidation treatment
    2.
    发明授权
    Profile and CD uniformity control by plasma oxidation treatment 有权
    通过等离子体氧化处理的轮廓和CD均匀性控制

    公开(公告)号:US08298949B2

    公开(公告)日:2012-10-30

    申请号:US12350060

    申请日:2009-01-07

    IPC分类号: H01L21/311

    摘要: A method of forming spacers from a non-silicon oxide, silicon containing spacer layer with horizontal surfaces and sidewall surfaces over a substrate is provided. A plasma oxidation treatment is provided to form a silicon oxide coating over the spacer layer, wherein the silicon oxide coating provides a horizontal coating on the horizontal surfaces and sidewall coatings on the sidewall surfaces of the spacer layer. An anisotropic main etch that selectively etches horizontal surfaces of the spacer layer and silicon oxide coating with respect to sidewall surfaces of the spacer layer and the sidewall coatings of the silicon oxide coating is provided. The spacer layer is etched, wherein the sidewall coatings of the silicon oxide coating protect sidewall surfaces of the spacer layer.

    摘要翻译: 提供了一种从非氧化硅形成间隔物的方法,在衬底上方具有水平表面和侧壁表面的含硅隔离层。 提供等离子体氧化处理以在间隔层上形成氧化硅涂层,其中氧化硅涂层在间隔层的侧壁表面上的水平表面和侧壁涂层上提供水平涂层。 提供了选择性地蚀刻间隔层和氧化硅涂层的水平表面相对于间隔层的侧壁表面和氧化硅涂层的侧壁涂层的各向异性主蚀刻。 间隔层被蚀刻,其中氧化硅涂层的侧壁涂层保护间隔层的侧壁表面。

    PROFILE AND CD UNIFORMITY CONTROL BY PLASMA OXIDATION TREATMENT
    3.
    发明申请
    PROFILE AND CD UNIFORMITY CONTROL BY PLASMA OXIDATION TREATMENT 有权
    简介和CD等离子体氧化处理的均匀性控制

    公开(公告)号:US20100173496A1

    公开(公告)日:2010-07-08

    申请号:US12350060

    申请日:2009-01-07

    IPC分类号: H01L21/4757

    摘要: A method of forming spacers from a non-silicon oxide, silicon containing spacer layer with horizontal surfaces and sidewall surfaces over a substrate is provided. A plasma oxidation treatment is provided to form a silicon oxide coating over the spacer layer, wherein the silicon oxide coating provides a horizontal coating on the horizontal surfaces and sidewall coatings on the sidewall surfaces of the spacer layer. An anisotropic main etch that selectively etches horizontal surfaces of the spacer layer and silicon oxide coating with respect to sidewall surfaces of the spacer layer and the sidewall coatings of the silicon oxide coating is provided. The spacer layer is etched, wherein the sidewall coatings of the silicon oxide coating protect sidewall surfaces of the spacer layer.

    摘要翻译: 提供了一种从非氧化硅形成间隔物的方法,在衬底上方具有水平表面和侧壁表面的含硅隔离层。 提供等离子体氧化处理以在间隔层上形成氧化硅涂层,其中氧化硅涂层在间隔层的侧壁表面上的水平表面和侧壁涂层上提供水平涂层。 提供了选择性地蚀刻间隔层和氧化硅涂层的水平表面相对于间隔层的侧壁表面和氧化硅涂层的侧壁涂层的各向异性主蚀刻。 间隔层被蚀刻,其中氧化硅涂层的侧壁涂层保护间隔层的侧壁表面。