SEMICONDUCTOR PROCESS
    95.
    发明申请
    SEMICONDUCTOR PROCESS 审中-公开
    半导体工艺

    公开(公告)号:US20150140819A1

    公开(公告)日:2015-05-21

    申请号:US14083456

    申请日:2013-11-19

    CPC classification number: H01L21/31053 H01L21/76224

    Abstract: A semiconductor process includes the following steps. A substrate having trenches with different sizes is provided. A first oxide layer is formed to entirely cover the substrate. A prevention layer is formed on the first oxide layer. A first filling layer is formed on the prevention layer and fills the trenches until the first filling layer is higher than the substrate. A first polishing process is performed to polish the first filling layer until exposing the prevention layer. A second polishing process is performed to polish the first filling layer, the prevention layer and the first oxide layer until the substrate is exposed.

    Abstract translation: 半导体工艺包括以下步骤。 提供具有不同尺寸的沟槽的衬底。 形成第一氧化物层以完全覆盖衬底。 在第一氧化物层上形成防止层。 第一填充层形成在预防层上并填充沟槽直到第一填充层高于衬底。 执行第一抛光处理以抛光第一填充层直到暴露预防层。 进行第二抛光处理以抛光第一填充层,防止层和第一氧化物层,直到基板被暴露。

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