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:
May. 29, 2001
Filed:
Sep. 29, 1998
Anthony C. Miller, Gilbert, AZ (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A method for IDDQ testing to detect defects in a semiconductor integrated circuit in the presence of a high background leakage current is disclosed. In one embodiment of the present invention at least a portion of the semiconductor device is biased and first, second and third quiescent currents are measured and the currents are then compared. A defect in the circuit will show up as a high quiescent current for one or more of the biasing conditions. In a practical device many test patterns are required, for instance 200 patterns may be necessary to reveal defects. Additionally, the delta in current which is sought to detect the defect may need to be repeated several times to assure its detection.