MANUFACTURING METHOD FOR SEMICONDUCTOR DEVICE HAVING METAL GATE
    1.
    发明申请
    MANUFACTURING METHOD FOR SEMICONDUCTOR DEVICE HAVING METAL GATE 有权
    具有金属栅的半导体器件的制造方法

    公开(公告)号:US20130280900A1

    公开(公告)日:2013-10-24

    申请号:US13454337

    申请日:2012-04-24

    IPC分类号: H01L21/283

    摘要: A manufacturing method for a semiconductor device having a metal gate is provided. First and second gate trenches are respectively formed in first and second semiconductor devices. A work-function metal layer is formed in the first and second gate trenches. A shielding layer is formed on the substrate. A first removing step is performed, so that the remaining shielding layer is at bottom of the second gate trench and fills up the first gate trench. A second removing step is performed, so that the remaining shielding layer is at bottom of the first gate trench to expose the work-function metal layer at sidewall of the first gate trench and in the second gate trench. The work-function metal layer not covered by the remaining shielding layer is removed, so that the remaining work-function metal layer is only at bottom of the first gate trench. The remaining shielding layer is removed.

    摘要翻译: 提供一种具有金属栅极的半导体器件的制造方法。 第一和第二栅极沟槽分别形成在第一和第二半导体器件中。 工作功能金属层形成在第一和第二栅极沟槽中。 在基板上形成屏蔽层。 执行第一去除步骤,使得剩余的屏蔽层位于第二栅极沟槽的底部并填充第一栅极沟槽。 执行第二去除步骤,使得剩余的屏蔽层位于第一栅极沟槽的底部,以在第一栅极沟槽的侧壁和第二栅极沟槽中露出功函数金属层。 除去未被剩余屏蔽层覆盖的功函数金属层,使剩余的功函数金属层仅在第一栅极沟槽的底部。 剩下的屏蔽层被去除。

    Manufacturing method for semiconductor device having metal gate
    2.
    发明授权
    Manufacturing method for semiconductor device having metal gate 有权
    具有金属栅极的半导体器件的制造方法

    公开(公告)号:US08951855B2

    公开(公告)日:2015-02-10

    申请号:US13454337

    申请日:2012-04-24

    IPC分类号: H01L21/8238

    摘要: A manufacturing method for a semiconductor device having a metal gate is provided. First and second gate trenches are respectively formed in first and second semiconductor devices. A work-function metal layer is formed in the first and second gate trenches. A shielding layer is formed on the substrate. A first removing step is performed, so that the remaining shielding layer is at bottom of the second gate trench and fills up the first gate trench. A second removing step is performed, so that the remaining shielding layer is at bottom of the first gate trench to expose the work-function metal layer at sidewall of the first gate trench and in the second gate trench. The work-function metal layer not covered by the remaining shielding layer is removed, so that the remaining work-function metal layer is only at bottom of the first gate trench. The remaining shielding layer is removed.

    摘要翻译: 提供一种具有金属栅极的半导体器件的制造方法。 第一和第二栅极沟槽分别形成在第一和第二半导体器件中。 工作功能金属层形成在第一和第二栅极沟槽中。 在基板上形成屏蔽层。 执行第一去除步骤,使得剩余的屏蔽层位于第二栅极沟槽的底部并填充第一栅极沟槽。 执行第二去除步骤,使得剩余的屏蔽层位于第一栅极沟槽的底部,以在第一栅极沟槽的侧壁和第二栅极沟槽中露出功函数金属层。 除去未被剩余屏蔽层覆盖的功函数金属层,使剩余的功函数金属层仅在第一栅极沟槽的底部。 剩下的屏蔽层被去除。