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    • 5. 发明申请
    • SLURRY FOR USE WITH FIXED-ABRASIVE POLISHING PADS IN POLISHING SEMICONDUCTOR DEVICE CONDUCTIVE STRUCTURES THAT INCLUDE COPPER AND TUNGSTEN AND POLISHING METHODS
    • 使用固定式研磨抛光垫抛光半导体器件导电结构的浆料,包括铜和钨以及抛光方法
    • WO0218099A3
    • 2002-10-31
    • PCT/US0127155
    • 2001-08-30
    • MICRON TECHNOLOGY INC
    • CHOPRA DINESHSINHA NISHANT
    • B24B37/04C09K13/00H01L21/304H01L21/321
    • B24B37/0056B24B37/04H01L21/3212
    • A method for substantially simultaneously polishing a copper conductive structure of a semiconductor device structure and an adjacent barrier layer. The method includes use of a fixed-abrasive type polishing pad with a substantially abrasive-free slurry in which copper is removed at a rate that is substantially the same as or faster than a rate at which a material, such as tungsten, of the barrier layer is removed. The slurry is formulated so as to oxidize copper at substantially the same rate as or at a faster rate than a material of the barrier layer is oxidized. Thus, copper and the barrier layer material have substantially the same oxidation energies in the slurry or the oxidation energy of the barrier layer material in the slurry may be greater than that of copper. Systems for substantially polishing copper conductive structures and adjacent barrier structures on semiconductor device structures are also disclosed.
    • 一种基本上同时抛光半导体器件结构的铜导电结构和相邻的阻挡层的方法。 该方法包括使用具有基本上无磨料的浆料的固定磨料型抛光垫,其中铜以与阻挡层的材料(例如钨)的速率基本相同或更快的速率被去除 层被删除。 配制浆料以便以与氧化阻挡层的材料基本上相同的速率或以更快的速率氧化铜。 因此,铜和阻挡层材料在浆料中具有基本相同的氧化能量,或者浆料中的阻挡层材料的氧化能量可以大于铜的氧化能量。 还公开了用于基本上抛光半导体器件结构上的铜导电结构和相邻的势垒结构的系统。