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    • 8. 发明授权
    • Plasma processing apparatus for processing semiconductor wafer using plasma
    • 使用等离子体处理半导体晶片的等离子体处理装置
    • US06771481B2
    • 2004-08-03
    • US09796494
    • 2001-03-02
    • Ryoji NishioSeiichiro KannoHideyuki YamamotoAkira Kagoshima
    • Ryoji NishioSeiichiro KannoHideyuki YamamotoAkira Kagoshima
    • B23B3128
    • H01J37/32082H01J37/32706H01J37/3299Y10T29/49124Y10T279/23
    • A plasma processing apparatus comprises: a body that comprises a vacuum processing chamber with a wafer stage on which a semiconductor wafer is held, a plasma producing unit for producing plasma within the vacuum chamber, and a high frequency source for applying a high frequency bias voltage to the wafer stage. A control unit controls various parameters of the body of the plasma processing apparatus. The control unit comprises a detecting unit for detecting the high frequency voltage or high frequency current applied to the wafer stage and for calculating a difference in phase between the high frequency voltage and the high frequency current, and a unit for obtaining a characteristic of the plasma or an electric characteristic of the plasma processing apparatus based on the detected high frequency voltage, the detected high frequency current, and the obtained difference in phase.
    • 一种等离子体处理装置包括:主体,其包括具有保持半导体晶片的晶片台的真空处理室,用于在真空室内产生等离子体的等离子体产生单元和用于施加高频偏置电压的高频源 到晶片台。 控制单元控制等离子体处理装置的主体的各种参数。 控制单元包括用于检测施加到晶片台的高频电压或高频电流并用于计算高频电压和高频电流之间的相位差的检测单元,以及用于获得等离子体的特性的单元 或基于检测到的高频电压,检测到的高频电流和所获得的相位差的等离子体处理装置的电特性。