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:
Sep. 02, 2008
Filed:
Apr. 30, 2007
Eric John Lukes, Stewartville, MN (US);
Nghia Van Phan, Rochester, MN (US);
Eric John Lukes, Stewartville, MN (US);
Nghia Van Phan, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A semiconductor storage array has a first array portion on a first plane of circuitry and a second array portion on a second plane of circuitry. A composite bit line and/or a composite word line is divided and arranged to have a first portion on the first array portion and a second portion on the second array portion. The two portions of the composite word line or the composite bit line are on different planes of circuitry, and three-dimensional interconnections connect proximal ends of the word line portions, or proximal ends of the bit line portions. A word line driver drives the word line portions in parallel. A bit line driver drives the bit line portions in parallel. Signal propagation times down the composite word or bit lines are significantly less than signal propagation times down corresponding undivided word or bit lines.