Semiconductor device and manufacturing method thereof
    3.
    发明授权
    Semiconductor device and manufacturing method thereof 有权
    半导体装置及其制造方法

    公开(公告)号:US08569839B2

    公开(公告)日:2013-10-29

    申请号:US13010417

    申请日:2011-01-20

    IPC分类号: H01L21/8238 H01L21/70

    摘要: To provide a semiconductor device that can be manufactured using a simple process without ensuring a high embedding property; and a manufacturing method of the device. In the manufacturing method of the semiconductor device according to the invention, a semiconductor substrate having a configuration obtained by stacking a support substrate, a buried insulating film, and a semiconductor layer in order of mention is prepared first. Then, an element having a conductive portion is completed over the main surface of the semiconductor layer. A trench encompassing the element in a planar view and reaching the buried insulating film from the main surface of the semiconductor layer is formed. A first insulating film (interlayer insulating film) is formed over the element and in the trench to cover the element and form an air gap in the trench, respectively. Then, a contact hole reaching the conductive portion of the element is formed in the first insulating film.

    摘要翻译: 提供可以使用简单的工艺制造而不确保高嵌入性的半导体器件; 以及该装置的制造方法。 在根据本发明的半导体器件的制造方法中,首先准备具有通过堆叠支撑衬底,埋入绝缘膜和半导体层获得的构造的半导体衬底。 然后,在半导体层的主表面上完成具有导电部分的元件。 形成了在平面图中包围元件并从半导体层的主表面到达掩埋绝缘膜的沟槽。 在元件上和沟槽中形成第一绝缘膜(层间绝缘膜)以覆盖元件并分别在沟槽中形成气隙。 然后,在第一绝缘膜中形成到达元件的导电部分的接触孔。