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:
Aug. 20, 2013
Filed:
Jan. 31, 2011
Mitsuhiko Noda, Yokohama, JP;
Mitsuhiko Noda, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
In one embodiment, a nonvolatile semiconductor memory device includes a substrate provided with a memory cell part and sense amplifiers on a surface of the substrate, first isolation regions and first device regions disposed in the substrate under the memory cell part, and second isolation regions and second device regions disposed in the substrate under the sense amplifiers. The device further includes a plurality of interconnects disposed on the substrate in the sense amplifiers, extending in a first direction parallel to the surface of the substrate, being adjacent to one another in a second direction perpendicular to the first direction, and arranged in the same interconnect layer. At least one of the second device regions includes first and second stripe portions extending in the first direction, being adjacent in the second direction, and having stripe shapes, and a connecting portion disposed to connect the first stripe portion and the second stripe portion. The device further includes a source contact disposed on the connecting portion, and electrically connected to one of the interconnects.