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    • 4. 发明授权
    • Plasma processing apparatus, plasma processing method, and non-transitory computer-readable medium
    • 等离子体处理装置,等离子体处理方法和非暂时计算机可读介质
    • US09396964B2
    • 2016-07-19
    • US13325757
    • 2011-12-14
    • Shin Matsuura
    • Shin Matsuura
    • B23K9/00G05D11/00E03B1/00H01L21/311G03F7/42H01J37/32
    • H01L21/31138G03F7/427H01J37/32091H01J37/32816H01J37/32935
    • A plasma processing apparatus includes: a process chamber which accommodates a substrate to be processed; a lower electrode disposed in the process chamber; an upper electrode including an electrode plate that is detachable and discharges a process gas inside the form of shower into the process chamber; a gas supply unit including a central pipe and a edge pipe for supplying the process gas to the upper electrode; a first high frequency power source which applies high frequency power for plasma generation to the lower electrode; pressure indicators which detect pressures inside gas supply pipes; and a controller which measures a degree of consumption of the electrode plate based on the pressures detected by the pressure indicators and calculates a variation in process rate resulting due to the consumption of the electrode plate to adjust process conditions to resolve the variation in process rate.
    • 等离子体处理装置包括:处理室,其容纳待处理的基板; 设置在处理室中的下电极; 上部电极,其包括可拆卸的电极板,并将处于所述淋浴形式的处理气体排出到所述处理室中; 气体供给单元,其包括中心管和用于将处理气体供给到上部电极的边缘管; 向下电极施加用于等离子体产生的高频电力的第一高频电源; 检测供气管内压力的压力指示器; 以及控制器,其基于由压力指示器检测到的压力来测量电极板的消耗程度,并且计算由于电极板的消耗而导致的处理速率的变化,以调整处理条件以解决处理速率的变化。