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    • 135. 发明授权
    • AQUEOUS DISPERSION, AQUEOUS DISPERSION FOR CHEMICAL MECHANICAL POLISHING USED FOR MANUFACTURE OF SEMICONDUCTOR DEVICES, METHOD FOR MANUFACTURE OF SEMICONDUCTOR DEVICES, AND METHOD FOR FORMATION OF EMBEDDED WRITING
    • 用于制造半导体器件的化学机械抛光的水性分散体,用于制造半导体器件的方法和用于形成嵌入式布线的方法
    • US06740590B1
    • 2004-05-25
    • US09531163
    • 2000-03-17
    • Hiroyuki YanoGaku MinamihabaYukiteru MatsuiKatsuya OkumuraAkira IioMasayuki Hattori
    • Hiroyuki YanoGaku MinamihabaYukiteru MatsuiKatsuya OkumuraAkira IioMasayuki Hattori
    • H01L21302
    • C09K3/1463C09G1/02C09K3/1436H01L21/02074H01L21/3212H01L21/7684
    • The object of the present invention is to provide an aqueous dispersion that can give the required properties for a wide range of uses including electronic materials, magnetic materials, optical materials and polishing materials, and to provide an aqueous dispersion for chemical mechanical polishing (CMP slurry) that gives an adequate polishing rate without creating scratches in polishing surfaces. Another object of the present invention is, to provide a method for manufacture of semiconductor devices using a CMP slurry that can control progressive erosion due to scratches and the like during polishing and that can achieve efficient flattening of working films, and to provide a method for formation of embedded wiring. The aqueous dispersion or CMP slurry of the present invention contains polymer particles made of thermoplastic resins or the like, and inorganic particles made of alumina, silica or the like, wherein the zeta potentials of the polymer particles and inorganic particles are of opposite signs, and they are bonded by electrostatic force to form aggregates as composite particles. The aggregates are subjected to ultrasonic wave irradiation or shear stress with a homogenizer to give more uniformly dispersed composite particles.
    • 本发明的目的是提供一种水性分散体,其可以为包括电子材料,磁性材料,光学材料和抛光材料在内的广泛用途提供所需的性能,并提供用于化学机械抛光的水性分散体(CMP浆料 ),其提供足够的抛光速率,而不会在抛光表面中产生划痕。 本发明的另一个目的是提供一种使用CMP浆料制造半导体器件的方法,所述CMP浆料可以在抛光期间控制由划痕等引起的逐渐侵蚀,并且可以实现工作膜的有效平坦化,并提供一种方法 形成嵌入式布线。 本发明的水性分散体或CMP浆料含有由热塑性树脂等构成的聚合物颗粒和由氧化铝,二氧化硅等制成的无机颗粒,其中聚合物颗粒和无机颗粒的ζ电位具有相反的标志, 它们通过静电力结合以形成作为复合颗粒的聚集体。 聚集体用均化器进行超声波照射或剪切应力,得到更均匀分散的复合颗粒。