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    • 2. 发明申请
    • Apparatus and method for electropolishing a metal wiring layer on a semiconductor device
    • 在半导体器件上电镀金属布线层的装置和方法
    • US20040217013A1
    • 2004-11-04
    • US10814381
    • 2004-03-31
    • Samsung Electronics Co., Ltd.
    • Sun-jung LeeKi-chul Park
    • H01L021/66C25F003/00B23H003/00
    • H01L21/7684B23H3/00B23H5/08B23H9/00C25F3/02C25F7/00H01L21/32125
    • The present invention relates to an apparatus and method for electropolishing a metal wire layer on a semiconductor device. To electropolish the metal wiring layer, a wafer is dipped into an electrolyte solution, and positive and negative voltages are applied to the wafer and electrodes, respectively. The electrodes include a main electrode and a plurality of auxiliary electrodes disposed above the main electrode. In a preferred embodiment, the plurality of auxiliary electrodes are mesh-type electrodes and are annular in shape and concentrically disposed, and thus the electrolyte solution can readily flow between them. Further, the metal wiring layer is preferably sequentially electropolished outwardly from the center of the wafer by sequentially applying negative voltages to the plurality of annular auxiliary electrodes. In this manner, a uniform electropolishing process is performed.
    • 本发明涉及一种在半导体器件上对金属线层进行电解抛光的装置和方法。 为了对金属布线层进行电解抛光,将晶片浸入电解质溶液中,并且将正和负电压分别施加到晶片和电极。 电极包括主电极和设置在主电极上方的多个辅助电极。 在一个优选实施例中,多个辅助电极是网状电极,并且是环形的并且同心设置,因此电解质溶液可以容易地在它们之间流动。 此外,金属布线层优选通过依次向多个环形辅助电极施加负电压而从晶片的中心向外电镀抛光。 以这种方式,进行均匀的电抛光处理。