Invention Grant
- Patent Title: Integrated thin-film resistor with direct contact
- Patent Title (中): 集成薄膜电阻直接接触
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Application No.: US11846595Application Date: 2007-08-29
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Publication No.: US07382055B2Publication Date: 2008-06-03
- Inventor: Eric M. Coker , Douglas D. Coolbaugh , Ebenezer E. Eshun , Zhong-Xiang He , Matthew D. Moon , Anthony K. Stamper
- Applicant: Eric M. Coker , Douglas D. Coolbaugh , Ebenezer E. Eshun , Zhong-Xiang He , Matthew D. Moon , Anthony K. Stamper
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Anthony J. Canale
- Main IPC: H01L29/40
- IPC: H01L29/40

Abstract:
A BEOL thin-film resistor adapted for flexible integration rests on a first layer of ILD. The thickness of the first layer of ILD and the resistor thickness combine to match the nominal design thickness of vias in the layer of concern. A second layer of ILD matches the resistor thickness and is planarized to the top surface of the resistor. A third layer of ILD has a thickness equal to the nominal value of the interconnections on this layer. Dual damascene interconnection apertures and apertures for making contact with the resistor are formed simultaneously, with the etch stop upper cap layer in the resistor protecting the resistive layer while the vias in the dual damascene apertures are formed.
Public/Granted literature
- US20070290272A1 INTEGRATED THIN-FILM RESISTOR WITH DIRECT CONTACT Public/Granted day:2007-12-20
Information query
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