Method for controlling polysilicon removal
    2.
    发明申请
    Method for controlling polysilicon removal 审中-公开
    控制多晶硅去除的方法

    公开(公告)号:US20070077865A1

    公开(公告)日:2007-04-05

    申请号:US11243140

    申请日:2005-10-04

    IPC分类号: B24B7/30 B24B1/00

    CPC分类号: H01L21/3212 C09G1/02

    摘要: The invention is directed to a method of chemically-mechanically polishing a substrate comprising polysilicon and a material selected from silicon oxide and silicon nitride with a chemical-mechanical polishing system comprising an abrasive, a polyethylene oxide/polypropylene oxide copolymer, water, and a polishing pad.

    摘要翻译: 本发明涉及一种化学机械抛光包括多晶硅和选自氧化硅和氮化硅的材料的衬底的方法,该化学机械抛光系统包括研磨剂,聚环氧乙烷/聚丙烯氧化物共聚物,水和抛光 垫。

    Compositions and methods for polishing silicon nitride materials
    4.
    发明申请
    Compositions and methods for polishing silicon nitride materials 有权
    用于研磨氮化硅材料的组合物和方法

    公开(公告)号:US20070298612A1

    公开(公告)日:2007-12-27

    申请号:US11448205

    申请日:2006-06-07

    IPC分类号: C03C15/00 H01L21/302

    摘要: The present invention provides a method for polishing silicon nitride-containing substrates. The method comprises abrading a surface of a silicon nitride substrate with a polishing composition, which comprises colloidal silica, at least one acidic component, and an aqueous carrier. The at least one acidic component has a pKa in the range of about 1 to 4.5. The composition has a pH in the range of about 0.5 pH units less than the pKa of the at least one acidic component to about 1.5 pH units greater than the pKa.

    摘要翻译: 本发明提供一种研磨含氮化硅的基板的方法。 该方法包括用抛光组合物研磨氮化硅衬底的表面,抛光组合物包括胶体二氧化硅,至少一种酸性组分和水性载体。 所述至少一种酸性组分的pKa在约1至4.5的范围内。 所述组合物的pH值比所述至少一种酸性组分的pKa小约0.5pH单位至大于pKa约1.5pH单位。

    Compositions and methods for polishing silicon nitride materials
    5.
    发明授权
    Compositions and methods for polishing silicon nitride materials 有权
    用于研磨氮化硅材料的组合物和方法

    公开(公告)号:US08759216B2

    公开(公告)日:2014-06-24

    申请号:US11448205

    申请日:2006-06-07

    摘要: The present invention provides a method for polishing silicon nitride-containing substrates. The method comprises abrading a surface of a silicon nitride substrate with a polishing composition, which comprises colloidal silica, at least one acidic component, and an aqueous carrier. The at least one acidic component has a pKa in the range of about 1 to 4.5. The composition has a pH in the range of about 0.5 pH units less than the pKa of the at least one acidic component to about 1.5 pH units greater than the pKa.

    摘要翻译: 本发明提供一种研磨含氮化硅的基板的方法。 该方法包括用抛光组合物研磨氮化硅衬底的表面,抛光组合物包括胶体二氧化硅,至少一种酸性组分和水性载体。 所述至少一种酸性组分的pKa在约1至4.5的范围内。 所述组合物的pH值比所述至少一种酸性组分的pKa小约0.5pH单位至大于pKa约1.5pH单位。