ULTRASONIC FILTRATION FOR CMP SLURRY
    1.
    发明申请
    ULTRASONIC FILTRATION FOR CMP SLURRY 审中-公开
    用于CMP浆料的超声波过滤

    公开(公告)号:US20100206818A1

    公开(公告)日:2010-08-19

    申请号:US12389346

    申请日:2009-02-19

    IPC分类号: B01D33/03

    CPC分类号: B01D21/283

    摘要: The present invention relates to semiconductor processing. In particular, it relates to a tunable ultrasonic filter and a method of using the same for more effective separation of large particles from slurry. In one embodiment a standing wave is produced in the filter and large particles are accumulated at the nodes of the standing waves while the slurry is flowed out of the filter.

    摘要翻译: 本发明涉及半导体处理。 具体地说,本发明涉及一种可调谐超声波滤波器及其使用方法,用于从浆料中更有效地分离大颗粒。 在一个实施例中,在过滤器中产生驻波,并且在浆料从过滤器流出的同时,在驻波的节点处积聚大量的颗粒。