Method for forming a spacer
    3.
    发明授权
    Method for forming a spacer 有权
    形成间隔物的方法

    公开(公告)号:US6096657A

    公开(公告)日:2000-08-01

    申请号:US281572

    申请日:1999-03-30

    摘要: A method is disclosed for forming a spacer, wherein said formation is preferably performed in a single dry etch sequence in a single dry etch tool. In this single dry etch sequence subsequently polysilicon spacers are defined, used as an etch mask and removed. Said etch sequence comprises at least one dry etching step. In case said etch sequence comprises more than one dry etching step, then these etching steps are performed subsequently in the same etch tool without breaking vacuum in said etch tool. In an embodiment of the invention the capability of using a single dry etch sequence for the formation of nitride spacers, using polysilicon spacer masking and the in-situ removal of the remaining polysilicon spacers, is demonstrated.

    摘要翻译: 公开了用于形成间隔物的方法,其中所述形成优选在单个干蚀刻工具中以单次干蚀刻顺序进行。 在该单次干蚀刻序列中,随后定义多晶硅间隔物,用作蚀刻掩模并除去。 所述蚀刻序列包括至少一个干蚀刻步骤。 在所述蚀刻序列包括多于一个干蚀刻步骤的情况下,则随后在相同的蚀刻工具中执行这些蚀刻步骤,而不会在所述蚀刻工具中破坏真空。 在本发明的一个实施方案中,证明了使用单个干蚀刻顺序来形成氮化物间隔物,使用多晶硅间隔物掩蔽和原位去除剩余的多晶硅间隔物的能力。