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:
Jun. 10, 2003
Filed:
Apr. 25, 2001
Roger G. Gamache, Essex Junction, VT (US);
David L. Gardell, Fairfax, VT (US);
Marc D. Knox, Hinesburg, VT (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An improved method of burn-in of I/C chips is provided wherein, at the beginning of the burn-in process, the thermal resistance between the heatsink and the chip is measured at reduced power, the maximum allowable thermal resistance between the chip and heatsink interface is calculated and compared to the actual thermal resistance of the interface. If the actual thermal resistance measured at the interface between the heatsink and the chip package is greater than the maximum allowable calculated thermal resistance, then the corrective action is initiated in order to prevent damage to the I/C chip during burn-in or increase efficient use of the test sites.