发明授权
- 专利标题: Method for fabricating a semiconductor device that includes processing an insulating film to have an upper portion with a different composition than an other portion
- 专利标题(中): 一种制造半导体器件的方法,包括处理绝缘膜以具有与其它部分不同的组成的上部
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申请号: US12251984申请日: 2008-10-15
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公开(公告)号: US07985675B2公开(公告)日: 2011-07-26
- 发明人: Kotaro Nomura , Makoto Tsutsue
- 申请人: Kotaro Nomura , Makoto Tsutsue
- 申请人地址: JP Osaka
- 专利权人: Panasonic Corporation
- 当前专利权人: Panasonic Corporation
- 当前专利权人地址: JP Osaka
- 代理机构: McDermott Will & Emery LLP
- 优先权: JP2007-291561 20071109
- 主分类号: H01L21/4763
- IPC分类号: H01L21/4763
摘要:
A semiconductor device includes: a semiconductor substrate; a first insulating film (third insulating film 24) formed on the semiconductor substrate, having a first trench (second interconnect trench 28), and having a composition ratio varying along the depth from an upper face of the first insulating film; and a first metal interconnect (second metal interconnect 25) filling the first trench (second interconnect trench 28). The mechanical strength in an upper portion of the first insulating film (third insulating film 24) is higher than that in the other portion of the insulating film (third insulating film 24).
公开/授权文献
- US20090121359A1 SEMICONDUCTOR DEVICE AND METHOD FOR FABRICATING THE SAME 公开/授权日:2009-05-14
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