发明授权
- 专利标题: Insulating film forming method capable of enhancing adhesion of silicon carbide film, etc. and semiconductor device
- 专利标题(中): 能够提高碳化硅膜等的粘附性的半导体装置的绝缘膜形成方法
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申请号: US11724219申请日: 2007-03-15
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公开(公告)号: US07642185B2公开(公告)日: 2010-01-05
- 发明人: Tamotsu Owada , Hirofumi Watatani , Ken Sugimoto , Shun-ichi Fukuyama
- 申请人: Tamotsu Owada , Hirofumi Watatani , Ken Sugimoto , Shun-ichi Fukuyama
- 申请人地址: JP Tokyo
- 专利权人: Fujitsu Microelectronics Limited
- 当前专利权人: Fujitsu Microelectronics Limited
- 当前专利权人地址: JP Tokyo
- 代理机构: Westerman, Hattori, Daniels & Adrian, LLP
- 优先权: JP2004-133964 20040428
- 主分类号: H01L21/4763
- IPC分类号: H01L21/4763
摘要:
A first film made of silicon carbide is formed over a substrate. The surface of the first film is exposed to an oxidizing atmosphere to oxidize the surface layer of the first film. The surface of the first film is made in contact with chemical which makes the surface hydrophilic. On the hydrophilic surface of the first film, a second film is formed which is an insulating film made of a low dielectric constant insulating material having a relative dielectric constant of 2.7 or smaller or an insulating film made by a coating method. A sufficient adhesion property is obtained when a film made of low dielectric constant insulating material is formed on an insulating film made of silicon carbide having a small amount of oxygen contents.
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