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:
Nov. 18, 2003
Filed:
Nov. 16, 2000
How T. Lin, Vestal, NY (US);
Christopher J. Majka, Owego, NY (US);
Matthew Francis Seward, Windsor, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and apparatus for locating a short between two nets in an electrical wire network of a microelectronic structure (e.g., chip, chip carrier, circuit card, etc.). A first net and a second net of the electrical wire are electrically shorted at an unknown point P on the first net. Points P and P on the first net such are selected such that P is located on a path between P and P along the first net. A constant current pulse source is electrically connected between P and P and is activated. Voltage drops V (from P to P ) and V (from P to a point P on the second net) are measured. A length L of the path from P to P is calculated as a function of V /V . Computer graphics may be used to graphically display the location of the short within the microelectronic structure.