Invention Grant
US08563391B2 Method for forming MIM capacitor in a copper damascene interconnect
有权
在铜镶嵌互连中形成MIM电容器的方法
- Patent Title: Method for forming MIM capacitor in a copper damascene interconnect
- Patent Title (中): 在铜镶嵌互连中形成MIM电容器的方法
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Application No.: US12316956Application Date: 2008-12-17
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Publication No.: US08563391B2Publication Date: 2013-10-22
- Inventor: Chun-Hong Chen , Minghsing Tsai
- Applicant: Chun-Hong Chen , Minghsing Tsai
- Applicant Address: TW Hsin-Chu
- Assignee: Taiwan Semiconductor Manufacturing Co., Ltd
- Current Assignee: Taiwan Semiconductor Manufacturing Co., Ltd
- Current Assignee Address: TW Hsin-Chu
- Agency: Duane Morris LLP
- Main IPC: H01L21/20
- IPC: H01L21/20

Abstract:
A method for forming a metal-insulator-metal capacitor in a multilevel semiconductor device utilizes the copper interconnect levels of the semiconductor device as parts of the capacitor. A lower capacitor plate consists of a copper interconnect level and a first metal layer formed on the copper interconnect level by selective deposition methods. The upper capacitor plate includes the same pattern as the capacitor dielectric, the pattern having an area less than the area of the lower capacitor plate. The upper capacitor plate is formed of a second metal layer. The first and second metal layers may each be formed of cobalt, tungsten, nickel, molybdenum, or a combinations of one of the aforementioned elements with boron and/or phosphorus. Conductive vias provide contact from the upper capacitor plate and lower capacitor plate, to interconnect levels.
Public/Granted literature
- US20090111234A1 Method for forming min capacitor in a copper damascene interconnect Public/Granted day:2009-04-30
Information query
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