Trilayered beam MEMS device and related methods
    1.
    发明授权
    Trilayered beam MEMS device and related methods 有权
    三层梁MEMS器件及相关方法

    公开(公告)号:US06746891B2

    公开(公告)日:2004-06-08

    申请号:US10290920

    申请日:2002-11-08

    IPC分类号: H01L2100

    摘要: Trilayered Beam MEMS Device and Related Methods. According to one embodiment, a method for fabricating a trilayered beam is provided. The method can include depositing a sacrificial layer on a substrate and depositing a first conductive layer on the sacrificial layer. The method can also include forming a first conductive microstructure by removing a portion of the first conductive layer. Furthermore, the method can include depositing a structural layer on the first conductive microstructure, the sacrificial layer, and the substrate and forming a via through the structural layer to the first conductive microstructure. Still furthermore, the method can include the following: depositing a second conductive layer on the structural layer and in the via; forming a second conductive microstructure by removing a portion of the second conductive layer, wherein the second conductive microstructure electrically communicates with the first conductive microstructure through the via; and removing a sufficient amount of the sacrificial layer so as to separate the first conductive microstructure from the substrate, wherein the structural layer is supported by the substrate at a first end and is freely suspended above the substrate at an opposing second end.

    摘要翻译: 三层梁MEMS器件及相关方法。 根据一个实施例,提供一种制造三层梁的方法。 该方法可以包括在衬底上沉积牺牲层并在牺牲层上沉积第一导电层。 该方法还可以包括通过去除第一导电层的一部分来形成第一导电微结构。 此外,该方法可以包括在第一导电微结构,牺牲层和衬底上沉积结构层,并且通过结构层将通孔形成到第一导电微结构。 此外,该方法可以包括以下:在结构层和通孔中沉积第二导电层; 通过去除所述第二导电层的一部分来形成第二导电微结构,其中所述第二导电微结构通过所述通孔与所述第一导电微结构电连通; 以及去除足够量的牺牲层以便将第一导电微结构与衬底分开,其中结构层在第一端由衬底支撑并且在相对的第二端处自由地悬挂在衬底上方。