Invention Grant
- Patent Title: Stacked chip security
- Patent Title (中): 堆叠芯片安全
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Application No.: US11145423Application Date: 2005-06-03
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Publication No.: US07557597B2Publication Date: 2009-07-07
- Inventor: Brent Alan Anderson , Edmund Juris Sprogis
- Applicant: Brent Alan Anderson , Edmund Juris Sprogis
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Bond, Schoeneck & King, PLLC
- Agent George R. McGuire
- Main IPC: G01R31/02
- IPC: G01R31/02

Abstract:
The present invention is directed to an integrated circuit module device. The device includes a first semiconductor chip having a first circuit layer and at least one first interconnection element disposed on a first chip surface. The at least one first interconnection element is electrically coupled to the first circuit layer. A second semiconductor chip includes a second circuit layer and at least one second interconnection element disposed on a second chip surface. The at least one second interconnection element is electrically coupled to the second circuit layer. The at least one first interconnection element is connected to the at least one second interconnection element to establish electrical continuity between the first circuit layer and the second circuit layer. The first surface is adjoined to the second surface. At least one ring delay circuit includes a first ring delay path partially disposed on the first circuit layer and a second ring delay path partially disposed on the second circuit layer. The first ring delay path and the second ring delay path form a signal path having a predetermined measurement signature. The ring delay circuit compares the predetermined measurement signature to a test measurement signature.
Public/Granted literature
- US20060273438A1 Stacked chip security Public/Granted day:2006-12-07
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