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    • 10. 发明申请
    • METHODS OF AND APPARATUS FOR REDUCING AMOUNTS OF PARTICLES ON A WAFER DURING WAFER DE-CHUCKING
    • 用于减少切割过程中波形颗粒数量和装置的方法和装置
    • WO2009002415A1
    • 2008-12-31
    • PCT/US2008/007507
    • 2008-06-12
    • LAM RESEARCH CORPORATIONCHO, SangjunKANG, SeanCHOI, TomHAN, Taejoon
    • CHO, SangjunKANG, SeanCHOI, TomHAN, Taejoon
    • H01L21/3065H01L21/304
    • H01L21/6833
    • Particles are trapped away from a wafer transport zone in a chamber. A first electrode is on one side of the zone. A second electrode is on an opposite side of the zone. A power supply connected across the electrodes establishes an electrostatic field between the electrodes. The field traps particles at the electrodes, away from the zone. For transporting the wafer from the chamber, the second electrode mounts the wafer for processing, and the first electrode is opposite to the second electrode defining a process space. The zone is in the space with a separate part of the space separating the zone from each electrode. Particles are urged away from the wafer by simultaneously terminating plasma processing of the wafer, connecting the second electrode to ground, applying a positive DC potential to the first electrode, and de- chucking the wafer from the second electrode into the zone.
    • 颗粒被捕获在室中的晶片输送区域。 第一电极位于该区域的一侧。 第二电极位于该区域的相对侧。 跨电极连接的电源在电极之间建立静电场。 该场捕获电极处的颗粒,远离该区域。 为了从腔室输送晶片,第二电极安装用于处理的晶片,并且第一电极与限定工艺空间的第二电极相对。 该区域在空间中,具有将区域与每个电极分离的空间的单独部分。 通过同时终止晶片的等离子体处理,将第二电极连接到地,将正的DC电位施加到第一电极,以及将晶片从第二电极去夹紧到区域中,从而将颗粒推离离开晶片。