公开(公告)号：US20170011891A1

公开(公告)日：2017-01-12

申请号：US15276423

申请日：2016-09-26

Applicant: Applied Materials, Inc.

Inventor： Edward P. HAMMOND, IV ,  Jing ZOU ,  Rodolfo P. BELEN ,  Meihua SHEN ,  Nicolas GANI ,  Andrew NGUYEN ,  David PALAGASHVILI ,  Michael D. WILLWERTH

IPC: H01J37/32 ,  H01L21/687 ,  H01L21/67

CPC classification number: H01J37/32642 ,  H01J37/321 ,  H01J37/3244 ,  H01J37/32623 ,  H01J2237/334 ,  H01L21/67069 ,  H01L21/68735

Abstract: A method and apparatus are provided for plasma etching a substrate in a processing chamber. A focus ring assembly circumscribes a substrate support, providing uniform processing conditions near the edge of the substrate. The focus ring assembly comprises two rings, a first ring and a second ring, the first ring comprising quartz, and the second ring comprising monocrystalline silicon, silicon carbide, silicon nitride, silicon oxycarbide, silicon oxynitride, or combinations thereof. The second ring is disposed above the first ring near the edge of the substrate, and creates a uniform electric field and gas composition above the edge of the substrate that results in uniform etching across the substrate surface.

Abstract translation: 提供了一种用于等离子体蚀刻处理室中的衬底的方法和装置。 聚焦环组件围绕衬底支撑件，在衬底的边缘附近提供均匀的加工条件。 聚焦环组件包括两个环，第一环和第二环，第一环包括石英，第二环包括单晶硅，碳化硅，氮化硅，碳氧化硅，氮氧化硅或其组合。 第二环设置在基板边缘附近的第一环上方，并且在衬底的边缘上方产生均匀的电场和气体组成，导致穿过衬底表面的均匀蚀刻。