METHOD TO IMPROVE PROFILE CONTROL AND N/P LOADING IN DUAL DOPED GATE APPLICATIONS
    1.
    发明申请
    METHOD TO IMPROVE PROFILE CONTROL AND N/P LOADING IN DUAL DOPED GATE APPLICATIONS 审中-公开
    改进双层门控应用中的配置文件控制和N / P加载的方法

    公开(公告)号:WO2004079783A3

    公开(公告)日:2005-01-20

    申请号:PCT/US2004005944

    申请日:2004-02-26

    CPC classification number: H01L21/32137

    Abstract: A method for etching a polysilicon gate structure in a plasma etch chamber is provided. The method initiates with defining a pattern protecting a polysilicon film to be etched. Then, a plasma is generated. Next, substantially all of the polysilicon film that is unprotected is etched. Then, a silicon containing gas is introduced and a remainder of the polysilicon film is etched while introducing a silicon containing gas. An etch chamber configured to introduce a silicon containing gas during an etch process is also provided.

    Abstract translation: 提供了一种在等离子体蚀刻室中蚀刻多晶硅栅极结构的方法。 该方法开始于限定保护待蚀刻的多晶硅膜的图案。 然后,产生等离子体。 接下来,蚀刻大部分未被保护的多晶硅膜。 然后,引入含硅气体,并且在引入含硅气体的同时蚀刻剩余的多晶硅膜。 还提供了一种被配置为在蚀刻工艺期间引入含硅气体的蚀刻室。

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