发明申请
- 专利标题: INTEGRATED CIRCUIT INTERCONNECT
- 专利标题(中): 集成电路互连
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申请号: US11427746申请日: 2006-06-29
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公开(公告)号: US20060237847A1公开(公告)日: 2006-10-26
- 发明人: Martin Roberts , Sanh Tang
- 申请人: Martin Roberts , Sanh Tang
- 专利权人: Micron Technology, Inc.
- 当前专利权人: Micron Technology, Inc.
- 主分类号: H01L23/52
- IPC分类号: H01L23/52
摘要:
A method for forming an electrical interconnect overlying a buried contact region of a substrate is characterized by a deposition of a first polycrystalline silicon layer and the patterning and etching of same to form a via. The via is formed in the first polycrystalline silicon layer to expose the substrate and a second polycrystalline silicon layer is formed in the via to contact the substrate. Portions of the second polycrystalline silicon layer overlying the first polycrystalline silicon layer are removed eliminating any horizontal interface between the two polycrystalline silicon layers. The first polycrystalline silicon layer remaining after the etch is then patterned to form an electrical interconnect.
公开/授权文献
- US07332811B2 Integrated circuit interconnect 公开/授权日:2008-02-19
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