Invention Grant
- Patent Title: Chip guard ring including a through-substrate via
- Patent Title (中): 芯片保护环包括贯通基板通孔
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Application No.: US12634726Application Date: 2009-12-10
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Publication No.: US08169055B2Publication Date: 2012-05-01
- Inventor: John D. Gillis , Wan Ni
- Applicant: John D. Gillis , Wan Ni
- 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: H01L23/48
- IPC: H01L23/48 ; H01L21/768

Abstract:
At least one through-substrate via is formed around the periphery of a semiconductor chip or a semiconductor chiplet included in a semiconductor chip. The at least one through-substrate via may be a single through-substrate via that laterally surrounds the semiconductor chip or the semiconductor chiplet, or may comprise a plurality of through-substrate vias that surrounds the periphery with at least one gap among the through-substrate vias. A stack of back-end-of-line (BEOL) metal structures that laterally surrounds the semiconductor chip or the semiconductor chiplet are formed directly on the substrate contact vias and electrically connected to the at least one through-substrate via. A metallic layer is formed on the backside of the semiconductor substrate including the at least one through-substrate via. The conductive structure including the metallic layer, the at least one through-substrate via, and the stack of the BEOL metal structures function as an electrical ground built into the semiconductor chip.
Public/Granted literature
- US20100237472A1 Chip Guard Ring Including a Through-Substrate Via Public/Granted day:2010-09-23
Information query
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