Invention Grant
- Patent Title: Manufacturing method of semiconductor device
- Patent Title (中): 半导体器件的制造方法
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Application No.: US11764073Application Date: 2007-06-15
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Publication No.: US08048735B2Publication Date: 2011-11-01
- Inventor: Kenichi Takeda , Tsuyoshi Fujiwara , Toshinori Imai
- Applicant: Kenichi Takeda , Tsuyoshi Fujiwara , Toshinori Imai
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Miles & Stockbridge P.C.
- Priority: JP2006-179027 20060629
- Main IPC: H01L21/8242
- IPC: H01L21/8242

Abstract:
The present invention provides an MIM capacitor using a high-k dielectric film preventing degradation of breakdown field strength of the MIM capacitor and suppressing the increase of the leakage current. The MIM capacitor comprises a first metal interconnect, a fabricated capacitance film, a fabricated upper electrode, and a third metal interconnect. The MIM capacitor is realized by forming an interlayer dielectric film comprising silicon oxide so as to cover the first metal interconnect, then forming a first opening in the interlayer dielectric film to a region corresponding to a via hole layer in the interlayer dielectric film just above the first metal interconnect so as not to expose the upper surface of the first metal interconnect, then forming a second opening to the inside of the first opening so as to expose the surface of the first metal interconnect and then forming a capacitance film and a third metal interconnect.
Public/Granted literature
- US20080020540A1 MANUFACTURING METHOD OF SEMICONDUCTOR DEVICE Public/Granted day:2008-01-24
Information query
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