Invention Grant
US07648621B2 Copper electroplating method, pure copper anode for copper electroplating, and semiconductor wafer plated thereby with little particle adhesion
有权
铜电镀方法,用于铜电镀的纯铜阳极和由此形成的具有很小颗粒粘附性的半导体晶片
- Patent Title: Copper electroplating method, pure copper anode for copper electroplating, and semiconductor wafer plated thereby with little particle adhesion
- Patent Title (中): 铜电镀方法,用于铜电镀的纯铜阳极和由此形成的具有很小颗粒粘附性的半导体晶片
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Application No.: US10486078Application Date: 2002-09-05
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Publication No.: US07648621B2Publication Date: 2010-01-19
- Inventor: Akihiro Aiba , Takeo Okabe , Junnosuke Sekiguchi
- Applicant: Akihiro Aiba , Takeo Okabe , Junnosuke Sekiguchi
- Applicant Address: JP Tokyo
- Assignee: Nippon Mining & Metals Co., Ltd.
- Current Assignee: Nippon Mining & Metals Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Howson & Howson LLP
- Priority: JP2001-374212 20011207
- International Application: PCT/JP02/09014 WO 20020905
- International Announcement: WO03/048429 WO 20030612
- Main IPC: C25D3/38
- IPC: C25D3/38

Abstract:
The present invention pertains to an electrolytic copper plating method characterized in employing pure copper as the anode upon performing electrolytic copper plating, and performing electrolytic copper plating with the pure copper anode having a crystal grain diameter of 10 μm or less or 60 μm or more or a non-recrystallized anode. Provided are an electrolytic copper plating method and a pure copper anode for electrolytic copper plating used in such electrolytic copper plating method capable of suppressing the generation of particles such as sludge produced on the anode side within the plating bath upon performing electrolytic copper plating, and capable of preventing the adhesion to a semiconductor wafer, as well as a semiconductor wafer plated with the foregoing method and anode having low particle adhesion.
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