Inter-Electrode Gap Variation Methods for Compensating Deposition Non-Uniformity

    公开(公告)号:US20180144903A1

    公开(公告)日:2018-05-24

    申请号:US15860547

    申请日:2018-01-02

    Inventor: Fayaz Shaikh

    Abstract: Methods and systems for depositing material layers with gap variation between film deposition operations. One method includes depositing a material layer over a substrate. The depositing is performed in a plasma chamber having a bottom electrode and a top electrode. The method includes providing a substrate over the bottom electrode in the plasma chamber. The method sets a first gap between the bottom and top electrodes and performs plasma deposition to deposit a first film of the material layer over the substrate while the first gap is set between the bottom and top electrodes. The method then sets a second gap between the bottom a top electrodes and performs plasma deposition to deposit a second film of the material layer over the substrate while the second gap is set between the bottom and top electrodes. The material layer is defined by the first and second films and the first gap is varied to the second gap to offset expected non-uniformities when depositing the first film followed by the second film.

    Selective etch rate monitor
    58.
    发明授权

    公开(公告)号:US09978621B1

    公开(公告)日:2018-05-22

    申请号:US15351437

    申请日:2016-11-14

    Abstract: Embodiments include a real time etch rate sensor and methods of for using a real time etch rate sensor. In an embodiment, the real time etch rate sensor includes a resonant system and a conductive housing. The resonant system may include a resonating body, a first electrode formed over a first surface of the resonating body, a second electrode formed over a second surface of the resonating body, and a sacrificial layer formed over the first electrode. In an embodiment, at least a portion of the first electrode is not covered by the sacrificial layer. In an embodiment, the conductive housing may secure the resonant system. Additionally, the conductive housing contacts the first electrode, and at least a portion of an interior edge of the conductive housing may be spaced away from the sacrificial layer.

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