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    • 8. 发明申请
    • ELECTRODEPOSITION SYSTEMS AND METHODS THAT MINIMIZE ANODE AND/OR PLATING SOLUTION DEGRADATION
    • 最小化阳极和/或镀层溶液降解的电沉积系统和方法
    • US20150337451A1
    • 2015-11-26
    • US14284932
    • 2014-05-22
    • International Business Machines Corporation
    • Charles L. ArvinHarry D. CoxEric D. Perfecto
    • C25D21/12C25D17/00
    • C25D5/18C25D17/10C25D21/12
    • Disclosed are electrodeposition systems and methods wherein at least three electrodes are placed in a container containing a plating solution. The electrodes are connected to a polarity-switching unit and include a first electrode, a second electrode and a third electrode. The polarity-switching unit establishes a constant polarity state between the first and second electrodes in the solution during an active plating mode, wherein the first electrode has a negative polarity and the second electrode has a positive polarity, thereby allowing a plated layer to form on a workpiece at the first electrode. The polarity-switching unit further establishes an oscillating polarity state between the second and third electrodes during a non-plating mode (i.e., when the first electrode is removed from the plating solution), wherein the second electrode and the third electrode have opposite polarities that switch at regular, relatively fast, intervals, thereby limiting degradation of the second electrode and/or the plating solution.
    • 公开了电沉积系统和方法,其中至少三个电极放置在容纳电镀液的容器中。 电极连接到极性切换单元,并且包括第一电极,第二电极和第三电极。 极性切换单元在有源电镀模式期间在溶液中的第一和第二电极之间建立恒定的极性状态,其中第一电极具有负极性,并且第二电极具有正极性,从而允许电镀层形成 第一电极处的工件。 极性切换单元进一步在非电镀模式(即,当第一电极从电镀溶液中除去时)在第二和第三电极之间建立振荡极性状态,其中第二电极和第三电极具有相反的极性, 以规则,相对较快的间隔切换,从而限制第二电极和/或电镀液的劣化。