Invention Grant
- Patent Title: Electrodepositing a metal in integrated circuit applications
- Patent Title (中): 在集成电路应用中电沉积金属
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Application No.: US11136582Application Date: 2005-05-23
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Publication No.: US07902062B2Publication Date: 2011-03-08
- Inventor: Stephan Bradl , Klaus Kerkel , Christine Lindner
- Applicant: Stephan Bradl , Klaus Kerkel , Christine Lindner
- Applicant Address: DE Munich
- Assignee: Infineon Technologies AG
- Current Assignee: Infineon Technologies AG
- Current Assignee Address: DE Munich
- Agency: Brinks Hofer Gilson & Lione
- Priority: DE10254815 20021123
- Main IPC: H01L21/4763
- IPC: H01L21/4763

Abstract:
A method is described in which a contact hole (18) to an interconnect (14) in an insulating layer (16) is fabricated. A barrier layer (20) is subsequently applied. Afterward, a photoresist layer (30) is applied, irradiated and developed. With the aid of a galvanic method, a copper contact (32) is then produced in the contact hole (18). Either the barrier layer (20) or an additional boundary electrode layer (22) serves as a boundary electrode in the galvanic process. Critical metal contaminations are minimized in production.
Public/Granted literature
- US20050221602A1 Electrodepositing a metal in integrated circuit applications Public/Granted day:2005-10-06
Information query
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