DIELECTRIC PROTECTION LAYER AS A CHEMICAL-MECHANICAL POLISHING STOP LAYER
    2.
    发明申请
    DIELECTRIC PROTECTION LAYER AS A CHEMICAL-MECHANICAL POLISHING STOP LAYER 有权
    电介质保护层作为化学机械抛光停止层

    公开(公告)号:US20120205814A1

    公开(公告)日:2012-08-16

    申请号:US13028889

    申请日:2011-02-16

    IPC分类号: H01L23/48 H01L21/768

    摘要: The disclosure provides mechanisms of performing metal chemical-mechanical polishing (CMP) without significant loss of copper and a dielectric film of damascene structures. The mechanisms use a metal CMP stop layer made of a low-k dielectric film with a porogen, which significantly reduces the removal rate of the metal CMP stop layer by metal CMP. The metal CMP stop layer is converted into a porous low-k dielectric film after a cure (or curing) to remove or convert the porogen. The low-k value, such as equal to or less than about 2.6, of the metal CMP stop layer makes the impact of using of the metal CMP stop layer on RC delay from minimum to none. Further the CMP stop layer protects the porous low-k dielectric film underneath from exposure to water, organic compounds, and mobile ions in the CMP slurry.

    摘要翻译: 本公开提供了进行金属化学机械抛光(CMP)而不显着损失铜和镶嵌结构的介电膜的机理。 这些机制使用由具有致孔剂的低k电介质膜制成的金属CMP停止层,这显着地降低了通过金属CMP的金属CMP停止层的去除速率。 在固化(或固化)之后,将金属CMP停止层转化为多孔低k电介质膜以去除或转化致孔剂。 金属CMP停止层的低k值(例如等于或小于约2.6)使得金属CMP停止层的使用对RC延迟的影响从最小到无。 此外,CMP停止层保护下面的多孔低k电介质膜不暴露于CMP浆料中的水,有机化合物和移动离子。

    Semiconductor Device Having a Second Level of Metallization Formed over a First Level with Minimal Damage to the First Level and Method
    4.
    发明申请
    Semiconductor Device Having a Second Level of Metallization Formed over a First Level with Minimal Damage to the First Level and Method 有权
    具有第二级金属化的半导体器件形成于第一级并具有最小损害的第一级和方法

    公开(公告)号:US20100203722A1

    公开(公告)日:2010-08-12

    申请号:US12765662

    申请日:2010-04-22

    IPC分类号: H01L21/768 H01L21/306

    摘要: A method for processing a semiconductor structure includes the steps of capping a top surface of the semiconductor structure that defines the metallization layer with a thin stop layer, forming a dielectric layer over the thin stop layer, wherein the dielectric layer defines at least one area where the thin stop layer is exposed, and removing the exposed thin stop layer to expose a top surface of the metallization layer using etchant gases substantially free from oxygen, so that the metallization layer is substantially free of damage.

    摘要翻译: 一种用于处理半导体结构的方法包括以下步骤:用薄的阻挡层覆盖限定金属化层的半导体结构的顶表面,在薄的停止层上形成电介质层,其中介电层限定至少一个区域, 暴露薄的止挡层,并且使用基本上不含氧的蚀刻剂气体去除暴露的薄止挡层以暴露金属化层的顶表面,使得金属化层基本上没有损坏。