NEW PROCESS FLOW FOR A COMBINED CA AND TSV OXIDE DEPOSITION
    4.
    发明申请
    NEW PROCESS FLOW FOR A COMBINED CA AND TSV OXIDE DEPOSITION 有权
    用于组合CA和TSV氧化物沉积的新工艺流程

    公开(公告)号:US20150243582A1

    公开(公告)日:2015-08-27

    申请号:US14186360

    申请日:2014-02-21

    Inventor: Christian KLEWER

    Abstract: A method of forming a TSV isolation layer and a transistor-to-BEOL isolation layer during a single deposition process and the resulting device are disclosed. Embodiments include providing a gate stack, with source/drain regions at opposite sides thereof, and an STI layer on a silicon substrate; forming a TSV trench, laterally separated from the gate stack, through the STI layer and the silicon substrate; forming an isolation layer on sidewalls and a bottom surface of the TSV trench and over the gate stack, the STI layer, and the silicon substrate; forming a TSV in the TSV trench; forming a dielectric cap over the isolation layer and the TSV; and forming a source/drain contact through the dielectric cap and the isolation layer down to the source/drain contract regions.

    Abstract translation: 公开了在单个沉积工艺期间形成TSV隔离层和晶体管至BEOL隔离层的方法以及所得到的器件。 实施例包括提供栅堆叠,其相对侧的源/漏区和硅衬底上的STI层; 通过STI层和硅衬底形成横向与栅堆叠分离的TSV沟槽; 在所述TSV沟槽的侧壁和底表面上以及所述栅叠层,所述STI层和所述硅衬底之上形成隔离层; 在TSV沟槽中形成TSV; 在隔离层和TSV上形成电介质盖; 以及通过介电盖和隔离层形成源极/漏极接触点,直到源极/漏极接合区域。

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