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:
Jul. 21, 2009
Filed:
Aug. 22, 2007
Bendik Kleveland, Santa Clara, CA (US);
Bendik Kleveland, Santa Clara, CA (US);
ZeroG Wireless, Inc., Sunnyvale, CA (US);
Abstract
An apparatus includes a semiconductor substrate, elongated diffused well regions, and elongated conductors. The semiconductor substrate has a first electrical conductivity type. The elongated diffused well regions are in the semiconductor substrate. The diffused well regions have a second electrical conductivity type opposite the first electrical conductivity type. Each of the elongated electrical conductors crosses the diffused well regions at respective locations of one-time programmable memory cells. Each of the memory cells includes a antifuse structure between the respective diffused well region and the respective electrical conductor. Each of the memory cells has a first state in which the antifuse structure has a first electrical resistance and a second state in which the antifuse structure has a second electrical resistance lower than the first electrical resistance. In the second state, each of the memory cells includes a rectifying junction between the respective diffused well region and the respective electrical conductor.