Invention Grant
US07687867B2 Inexpensive method of fabricating a higher performance capacitance density MIMcap integrable into a copper interconnect scheme
失效
制造更高性能的电容密度MIMcap的廉价方法可以集成到铜互连方案中
- Patent Title: Inexpensive method of fabricating a higher performance capacitance density MIMcap integrable into a copper interconnect scheme
- Patent Title (中): 制造更高性能的电容密度MIMcap的廉价方法可以集成到铜互连方案中
-
Application No.: US11846248Application Date: 2007-08-28
-
Publication No.: US07687867B2Publication Date: 2010-03-30
- Inventor: Douglas D. Coolbaugh , Ebenezer E. Eshun , Zhong-Xiang He , William J. Murphy , Vidhya Ramachandran
- Applicant: Douglas D. Coolbaugh , Ebenezer E. Eshun , Zhong-Xiang He , William J. Murphy , Vidhya Ramachandran
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Agent Anthony J. Canale
- Main IPC: H01L29/72
- IPC: H01L29/72

Abstract:
A method to integrate MIM capacitors into conductive interconnect levels, with low cost impact, and high yield, reliability and performance than existing integration methods is provided. This is accomplished by recessing a prior level dielectric for MIM capacitor level alignment followed by deposition and patterning of the MIM capacitor films. Specifically, the method includes providing a substrate including a wiring level, the wiring level comprising at least one conductive interconnect formed in a dielectric layer; selectively removing a portion of the dielectric layer to recess the dielectric layer below an upper surface of the at least one conductive interconnect; forming a dielectric stack upon the at least one conductive interconnect and the recessed dielectric layer; and forming a metal-insulator-metal (MIM) capacitor on the dielectric stack. The MIM capacitor includes a bottom plate electrode, a dielectric and a top plate electrode. The bottom and top plate electrodes can comprise the same or different conductive metal.
Public/Granted literature
Information query
IPC分类: