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    • 1. 发明专利
    • Plasma processing method and plasma processing device
    • 等离子体处理方法和等离子体处理装置
    • JP2014075398A
    • 2014-04-24
    • JP2012220887
    • 2012-10-03
    • Tokyo Electron Ltd東京エレクトロン株式会社
    • HIRASAWA TATSUROYOKOYAMA ATSUSHIYASUMURO CHIAKIFUJISATO TOSHIAKIYOSHIDA RYUTASAKUMA TAKASHIKAN SENSHU
    • H01L21/683H01L21/3065H01L21/31
    • H05F3/00C23C14/34C23C14/50C23C16/50H01J37/32568H01J37/34H01L21/6833
    • PROBLEM TO BE SOLVED: To provide a plasma processing method capable of sufficiently obtaining a chucking force for plasma processing and suppressing a particle generation amount by reducing residual charges.SOLUTION: A plasma processing method for performing plasma processing for a workpiece in a state in which the workpiece is absorbed onto an electrostatic chuck provided on an upper surface of a mounting table comprises the steps of: absorbing the workpiece onto the electrostatic chuck by applying a first voltage as an applied voltage and performing plasma processing for the workpiece in a state in which a heat-transfer gas is supplied between the electrostatic chuck and the workpiece (plasma processing step); stopping applied gas supply when the plasma processing step ends and reducing the applied voltage while exhausting heat-transfer gases remaining between the electrostatic chuck and the workpiece (applied voltage reducing step); and setting the applied voltage to the electrostatic chuck to zero and detaching the workpiece from the electrostatic chuck after the applied voltage reducing step (detaching step).
    • 要解决的问题:提供一种等离子体处理方法,其能够充分获得用于等离子体处理的夹持力并通过降低残余电荷来抑制颗粒发生量。解决方案:一种用于在工件中执行等离子体处理的等离子体处理方法, 工件被吸收到设置在安装台的上表面上的静电卡盘上,包括以下步骤:通过施加第一电压作为施加电压将工件吸收到静电卡盘上,并在工件的等离子体处理中 在静电卡盘和工件之间供给传热气体(等离子体处理工序); 当等离子体处理步骤结束时停止施加的气体供应并且在排出残留在静电卡盘和工件之间的热传递气体的同时降低施加的电压(施加电压降低步骤); 并且在施加的电压降低步骤(分离步骤)之后,将施加的静电卡盘的电压设置为零并将工件从静电卡盘分离。