Invention Grant
- Patent Title: Metal wiring structure for integration with through substrate vias
- Patent Title (中): 金属布线结构,用于与基板通孔集成
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Application No.: US13080716Application Date: 2011-04-06
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Publication No.: US08234606B2Publication Date: 2012-07-31
- Inventor: David S. Collins , Alvin Joseph , Peter J. Lindgren , Anthony K. Stamper , Kimball M. Watson
- Applicant: David S. Collins , Alvin Joseph , Peter J. Lindgren , Anthony K. Stamper , Kimball M. Watson
- 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 Richard M. Kotulak, Esq.
- Main IPC: G06F17/50
- IPC: G06F17/50 ; H01L29/40

Abstract:
An array of through substrate vias (TSVs) is formed through a semiconductor substrate and a contact-via-level dielectric layer thereupon. A metal-wire-level dielectric layer and a line-level metal wiring structure embedded therein are formed directly on the contact-via-level dielectric layer. The line-level metal wiring structure includes cheesing holes that are filled with isolated portions of the metal-wire-level dielectric layer. In one embodiment, the entirety of the cheesing holes is located outside the area of the array of the TSVs to maximize the contact area between the TSVs and the line-level metal wiring structure. In another embodiment, a set of cheesing holes overlying an entirety of seams in the array of TSVs is formed to prevent trapping of any plating solution in the seams of the TSVs during plating to prevent corrosion of the TSVs at the seams.
Public/Granted literature
- US20110185330A1 METAL WIRING STRUCTURE FOR INTEGRATION WITH THROUGH SUBSTRATE VIAS Public/Granted day:2011-07-28
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