Multi-step process for forming high-aspect-ratio holes for MEMS devices
    33.
    发明授权
    Multi-step process for forming high-aspect-ratio holes for MEMS devices 有权
    用于形成MEMS器件的高纵横比孔的多步法

    公开(公告)号:US07923379B2

    公开(公告)日:2011-04-12

    申请号:US12347250

    申请日:2008-12-31

    IPC分类号: H01L21/31

    摘要: A method of forming an integrated circuit structure includes forming an opening in a substrate, with the opening extending from a top surface of the substrate into the substrate. The opening is filled with a filling material until a top surface of the filling material is substantially level with the top surface of the substrate. A device is formed over the top surface of the substrate, wherein the device includes a storage opening adjoining the filling material. A backside of the substrate is grinded until the filling material is exposed. The filling material is removed from the channel until the storage opening of the device is exposed.

    摘要翻译: 形成集成电路结构的方法包括在衬底中形成开口,其中开口从衬底的顶表面延伸到衬底中。 开口填充有填充材料,直到填充材料的顶表面基本上与基板的顶表面平齐。 在衬底的顶表面上形成器件,其中该器件包括与填充材料相邻的存储开口。 研磨衬底的背面,直到填充材料暴露。 将填充材料从通道中取出直到设备的存储开口露出。