Electroplating bath containing wetting agent for defect reduction
    3.
    发明授权
    Electroplating bath containing wetting agent for defect reduction 失效
    含有润湿剂的电镀浴,用于减少缺陷

    公开(公告)号:US07232513B1

    公开(公告)日:2007-06-19

    申请号:US10879613

    申请日:2004-06-29

    IPC分类号: C25D3/38 C25D5/02

    CPC分类号: C25D3/38 C25D5/04 C25D5/18

    摘要: An electroplating solution contains a wetting agent in addition to a suppressor and an accelerator. In some embodiments, the solution has a cloud point temperature greater than 35° C. to avoid precipitation of wetting agent or other solute out of the plating solution. In some embodiments, the wetting agent decreases the air-liquid surface tension of the electroplating solution to 60 dyne/cm2 or less to increase the wetting ability of the solution with a substrate surface. In some embodiments of a method for plating metal onto substrate surface, the electroplating solution has a measured contact angle with the substrate surface less than 60 degrees.

    摘要翻译: 除了抑制剂和促进剂之外,电镀溶液还含有润湿剂。 在一些实施方案中,溶液的浊点温度大于35℃,以避免润湿剂或其它溶质从电镀溶液中沉淀出来。 在一些实施方案中,润湿剂将电镀溶液的空气 - 液体表面张力降低至60达因/厘米2或更小,以增加溶液与基底表面的润湿能力。 在用于将金属电镀到衬底表面上的方法的一些实施例中,电镀溶液具有与衬底表面的测量的接触角小于60度。

    Electroplating using DC current interruption and variable rotation rate
    4.
    发明授权
    Electroplating using DC current interruption and variable rotation rate 有权
    电镀采用直流电流中断和可变转速

    公开(公告)号:US06884335B2

    公开(公告)日:2005-04-26

    申请号:US10441607

    申请日:2003-05-20

    摘要: A negative bias is applied to an integrated circuit wafer immersed in an electrolytic plating solution to generate a DC current. After about ten percent to sixty percent of the final layer thickness has formed in a first plating time, biasing is interrupted during short pauses during a second plating time to generate substantially zero DC current. The pauses are from about 2 milliseconds to 5 seconds long, and typically about 10 milliseconds to 500 milliseconds. Generally, about 2 pauses to 100 pauses are used, and typically about 3 pauses to 15 pauses. Generally, the DC current density during the second plating time is greater than the DC current density during the initial plating time. Typically, the integrated circuit wafer is rotated during electroplating. Preferably, the wafer is rotated at a slower rotation rate during the second plating time than during the first plating time.

    摘要翻译: 将负偏压施加到浸在电解电镀溶液中的集成电路晶片以产生DC电流。 在第一电镀时间中已经形成最终层厚度的约百分之十到百分之六十之后,在第二电镀时间期间的短暂停期间偏压中断,以产生基本为零的DC电流。 停顿时间为大约2毫秒到5秒,通常为大约10毫秒到500毫秒。 通常,使用约2次暂停至100次暂停,通常约3次暂停至15次停顿。 通常,第二电镀时间期间的直流电流密度大于初始电镀时间期间的直流电流密度。 通常,电镀期间集成电路晶片旋转。 优选地,在第二电镀时间期间,晶片以比第一电镀时间期间更慢的旋转速度旋转。