Chemical mechanical method of polishing wafer surfaces
    62.
    发明授权
    Chemical mechanical method of polishing wafer surfaces 有权
    抛光晶圆表面的化学机械方法

    公开(公告)号:US06375545B1

    公开(公告)日:2002-04-23

    申请号:US09484252

    申请日:2000-01-18

    IPC分类号: B24B100

    摘要: It is an object of the present invention to provide an aqueous dispersion and CMP slurry that can achieve polishing at an adequate rate without producing scratches in the polishing surfaces of wafer working films, and a polishing process for wafer surfaces and a process for manufacture of a semiconductor device using them. A CMP slurry and the like of the present invention contains polymer particles with a crosslinked structure and a mean particle size of 0.13-0.8 &mgr;m. The CMP slurry may contain no surfactant, and may contain the surfactant of not greater than 0.15 wt %. A CMP slurry and the like of another present invention contains polymer particles and inorganic particles of silica, aluminum and the like. A mean particle size of the polymer particles may be not greater than a mean particle size of the inorganic particles. And the mean particle size of the inorganic coagulated particles may be 0.1-1.0 &mgr;m, and may be smaller than the mean particle size of the polymer particles. The CMP slurry is used as a polishing agent and a working film of a silicon oxide film, an aluminum film, a tungsten film or a copper film formed on a wafer is polished. And a semiconductor device is manufactured by using the CMP slurry.

    摘要翻译: 本发明的目的是提供一种水分散体和CMP浆料,其可以以足够的速率实现抛光,而不会在晶片工作薄膜的抛光表面中产生划痕,以及用于晶片表面的抛光工艺和制造 半导体器件使用它们。 本发明的CMP浆料等含有交联结构,平均粒径为0.13〜0.8μm的聚合物粒子。 CMP浆料可以不含表面活性剂,并且可以含有不大于0.15重量%的表面活性剂。 另一个本发明的CMP浆料等含有聚合物颗粒和二氧化硅,铝等的无机颗粒。 聚合物颗粒的平均粒径可以不大于无机颗粒的平均粒度。 无机凝结粒子的平均粒径可以为0.1〜1.0μm,并且可以小于聚合物粒子的平均粒径。 将CMP浆料用作抛光剂,并且研磨在晶片上形成的氧化硅膜,铝膜,钨膜或铜膜的工作膜。 并且通过使用CMP浆料制造半导体器件。