SELECTIVE ETCH RATE MONITOR
    2.
    发明申请

    公开(公告)号:US20180240692A1

    公开(公告)日:2018-08-23

    申请号:US15955375

    申请日:2018-04-17

    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.

    PHASED ARRAY MODULAR HIGH-FREQUENCY SOURCE
    4.
    发明申请

    公开(公告)号:US20190326096A1

    公开(公告)日:2019-10-24

    申请号:US15958569

    申请日:2018-04-20

    Abstract: Embodiments described herein include a modular high-frequency emission source comprising a plurality of high-frequency emission modules and a phase controller. In an embodiment, each high-frequency emission module comprises an oscillator module, an amplification module, and an applicator. In an embodiment, each oscillator module comprises a voltage control circuit and a voltage controlled oscillator. In an embodiment, each amplification module is coupled to an oscillator module, in an embodiment, each applicator is coupled to an amplification module. In an embodiment, the phase controller is communicatively coupled to each oscillator module.

    LOW TEMPERATURE SELECTIVE ETCHING OF SILICON NITRIDE USING MICROWAVE PLASMA

    公开(公告)号:US20230109912A1

    公开(公告)日:2023-04-13

    申请号:US17903913

    申请日:2022-09-06

    Abstract: Embodiments disclosed herein include a method of etching a 3D structure. In an embodiment, the method comprises providing the 3D structure in a microwave plasma chamber. In an embodiment, the 3D structure comprises a substrate, and alternating layers of silicon oxide and silicon nitride over the substrate. In an embodiment, the method further comprises flowing a first gas into the microwave plasma chamber, where the first gas comprises sulfur and fluorine. In an embodiment, the method comprises flowing a second gas into the microwave plasma chamber, where the second gas comprises an inert gas. In an embodiment, the method further comprises striking a plasma in the microwave plasma chamber, and etching the silicon nitride, where an etching selectivity of silicon nitride to silicon oxide is 50:1 or greater.

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