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    • 3. 发明授权
    • Plasma reactor and method
    • 等离子体反应器和方法
    • US06471821B2
    • 2002-10-29
    • US08848881
    • 1997-05-01
    • Satoshi OginoTakahiro Maruyama
    • Satoshi OginoTakahiro Maruyama
    • C23C1600
    • H01J37/32192H01J37/32678H01J37/32706H01L21/3065
    • A plasma reactor is provided for achieving extension of etching parameters to reduce charge-up shape anomaly and to improve selectivity, uniformity and workability in a dry etching process. An RF power fluctuates in cycles, each one of the cycles including first and second subcycles (25), (26) with different frequencies. The RF power in the first subcycles (25) is higher in frequency than that in the second subcycles (26). A charge accumulated during the first subcycles (25) in which the RF power of high frequency is applied can be relieved during the second subcycles (26) in which the RF power of low frequency is applied. At the same time, deterioration in an etching rate occurring with the application of only the RF power of low frequency can be relieved by applying the RF power of high frequency during the first subcycles (25).
    • 提供等离子体反应器用于实现蚀刻参数的延伸以减少电荷形状异常并提高干蚀刻工艺中的选择性,均匀性和可加工性。 RF功率以周期波动,每个周期包括具有不同频率的第一和第二子周期(25),(26)。 第一子周期(25)中的RF功率的频率高于第二子周期(26)。 在施加低频的RF功率的第二子周期(26)期间,可以释放在施加高频的RF功率的第一子周期(25)期间累积的电荷。 同时,通过在第一次循环(25)期间施加高频的RF功率,可以减轻仅施加低频的RF功率而发生的蚀刻速率的劣化。
    • 4. 发明授权
    • Plasma reactor
    • 等离子体反应器
    • US06656849B2
    • 2003-12-02
    • US10228999
    • 2002-08-28
    • Satoshi OginoTakahiro Maruyama
    • Satoshi OginoTakahiro Maruyama
    • H01L21461
    • H01J37/32192H01J37/32678H01J37/32706H01L21/3065
    • A plasma reactor is provided for achieving extension of etching parameters to reduce charge-up shape anomaly and to improve selectivity, uniformity and workability in a dry etching process. An RF power fluctuates in cycles, each one of the cycles including first and second subcycles (25), (26) with different frequencies. The RF power in the first subcycles (25) is higher in frequency than that in the second subcycles (26). A charge accumulated during the first subcycles (25) in which the RF power of high frequency is applied can be relieved during the second subcycles (26) in which the RF power of low frequency is applied. At the same time, deterioration in an etching rate occurring with the application of only the RF power of low frequency can be relieved by applying the RF power of high frequency during the first subcycles (25).
    • 提供等离子体反应器用于实现蚀刻参数的延伸以减少电荷形状异常并提高干蚀刻工艺中的选择性,均匀性和可加工性。 RF功率以周期波动,每个周期包括具有不同频率的第一和第二子周期(25),(26)。 第一子周期(25)中的RF功率的频率高于第二子周期(26)。 在施加低频的RF功率的第二子周期(26)期间,可以释放在施加高频的RF功率的第一子周期(25)期间累积的电荷。 同时,通过在第一次循环(25)期间施加高频的RF功率,可以减轻仅施加低频的RF功率而发生的蚀刻速率的劣化。