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. 26, 2009
Filed:
Aug. 13, 2007
David Kwok Kuen Kwong, Fremont, CA (US);
Ho Ming Karen Wan, Kowloon, HK;
Kam Chuen Wan, Tuen Mun, HK;
Chik Wai NG, Kowloon, HK;
David Kwok Kuen Kwong, Fremont, CA (US);
Ho Ming Karen Wan, Kowloon, HK;
Kam Chuen Wan, Tuen Mun, HK;
Chik Wai Ng, Kowloon, HK;
Abstract
The fuse cell architecturefor the presently claimed invention employs a multiple fuse structurearchitecture in lieu of a single fuse structure. As such, the terminals of these fuse structures that couple to other on-chip devices are always at ground potential throughout the application of programming voltage to the fuse pads. This approach overcomes previous single fuse problems owing to the fact that a sufficiently high programming voltage can be applied to blow fuse structures with unexpectedly high resistance without damaging nearby on-chip devices. Furthermore, even if one of the fuse structurespossessed an abnormally high resistance which would not be blown under typical conditions, the desired circuit trimming result can still be achieved owing to the blowing of the other fuse structure in the fuse cell