The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2019
Filed:
Dec. 17, 2015
International Business Machines Corporation, Armonk, NY (US);
Sushumna Iruvanti, Wappingers Falls, NY (US);
Shidong Li, Poughkeepsie, NY (US);
Marek A. Orlowski, Fishkill, NY (US);
David L. Questad, Hopewell Junction, NY (US);
Tuhin Sinha, Hackensack, NJ (US);
Krishna R. Tunga, Wappingers Falls, NY (US);
Thomas A. Wassick, LaGrangeville, NY (US);
Randall J. Werner, Poughkeepsie, NY (US);
Jeffrey A. Zitz, Poughkeepsie, NY (US);
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Abstract
A laminate includes a plurality of buildup layers disposed on a core and a plurality of unit cells defined in the buildup layers. Each unit cell includes: at least one test via that passes through at least two of the buildup layers and that is electrically connected to testing locations on a probe accessible location of the laminate; and two or more dummy vias disposed in the unit cell. The dummy vias are arranged in the unit cell at one of a plurality of distances from the test via.