SINGLE EXPOSURE IN MULTI-DAMASCENE PROCESS
    5.
    发明申请
    SINGLE EXPOSURE IN MULTI-DAMASCENE PROCESS 有权
    多元化过程中的单次接触

    公开(公告)号:US20120326313A1

    公开(公告)日:2012-12-27

    申请号:US13170095

    申请日:2011-06-27

    Abstract: Methods of fabricating a multi-layer semiconductor device such as a multi-layer damascene or inverted multi-layer damascene structure using only a single or reduced number of exposure steps. The method may include etching a precursor structure formed of materials with differential removal rates for a given removal condition. The method may include removing material from a multi-layer structure under different removal conditions. Further disclosed are multi-layer damascene structures having multiple cavities of different sizes. The cavities may have smooth inner wall surfaces. The layers of the structure may be in direct contact. The cavities may be filled with a conducting metal or an insulator. Multi-layer semiconductor devices using the methods and structures are further disclosed.

    Abstract translation: 仅使用单个或减少数量的曝光步骤来制造多层半导体器件的方法,例如多层镶嵌或倒置的多层镶嵌结构。 该方法可以包括用于对于给定的去除条件蚀刻由具有差异去除速率的材料形成的前体结构。 该方法可以包括在不同的去除条件下从多层结构去除材料。 还公开了具有不同尺寸的多个空腔的多层镶嵌结构。 空腔可以具有平滑的内壁表面。 结构的层可以直接接触。 空腔可以用导电金属或绝缘体填充。 进一步公开了使用这些方法和结构的多层半导体器件。

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