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公开(公告)号:US09340706B2
公开(公告)日:2016-05-17
申请号:US14051121
申请日:2013-10-10
Applicant: Cabot Microelectronics Corporation
Inventor: Brian Reiss , Jakub Nalaskowski , Viet Lam , Renhe Jia , Jeffrey Dysard
IPC: C09G1/02 , H01L21/306 , H01L21/02
CPC classification number: C09G1/02 , C09K3/1436 , C09K3/1463 , H01L21/02013 , H01L21/30625 , H01L21/31053
Abstract: The invention provides chemical-mechanical polishing compositions and methods of chemically-mechanically polishing a substrate with the chemical-mechanical polishing compositions. The polishing compositions comprise first abrasive particles, wherein the first abrasive particles are ceria particles, second abrasive particles, wherein the second abrasive particles are ceria particles, surface-modified silica particles, or organic particles, a pH-adjusting agent, and an aqueous carrier. The polishing compositions also exhibit multimodal particle size distributions.
Abstract translation: 本发明提供化学 - 机械抛光组合物和用化学 - 机械抛光组合物对衬底进行化学机械抛光的方法。 抛光组合物包括第一磨料颗粒,其中第一磨料颗粒是二氧化铈颗粒,第二磨料颗粒,其中第二磨料颗粒是二氧化铈颗粒,表面改性二氧化硅颗粒或有机颗粒,pH调节剂和含水载体 。 抛光组合物还表现出多峰粒度分布。