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公开(公告)号:US20130122712A1
公开(公告)日:2013-05-16
申请号:US13656578
申请日:2012-10-19
申请人: Jong Mun KIM , Kenny Linh Doan , Li Ling , Jairaj Payyapilly , Daisuke Shimuzu , Srinivas D. Nemani , Thorsten B. Lill
发明人: Jong Mun KIM , Kenny Linh Doan , Li Ling , Jairaj Payyapilly , Daisuke Shimuzu , Srinivas D. Nemani , Thorsten B. Lill
IPC分类号: H01L21/3065
CPC分类号: H01L21/31116
摘要: Methods of etching HAR features in a dielectric layer are described. In one embodiment, a substrate is provided into an etch chamber. The substrate has a patterned mask disposed on a dielectric layer formed thereon where the patterned mask has openings. A gas mixture is provided into the etch chamber, the gas mixture includes CO, O2, a fluorocarbon gas, and an optional inert gas. A plasma is formed from the gas mixture. Features are etched in the dielectric layer through the openings in the presence of the plasma
摘要翻译: 描述了蚀刻介电层中的HAR特征的方法。 在一个实施例中,将衬底提供到蚀刻室中。 衬底具有设置在其上形成的电介质层上的图案化掩模,其中图案化掩模具有开口。 气体混合物被提供到蚀刻室中,气体混合物包括CO,O 2,碳氟化合物气体和任选的惰性气体。 从气体混合物形成等离子体。 在存在等离子体的情况下,通过开口在电介质层中蚀刻特征