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:
Oct. 11, 2011
Filed:
Oct. 06, 2009
Nobuyasu Nishiyama, Yokkaichi, JP;
Nobuyasu Nishiyama, Yokkaichi, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A semiconductor device includes at least two adjacent memory cell blocks, each of the memory cell blocks having a plurality of memory cell units, each of memory cell units having a plurality of electrically reprogrammable and erasable memory cells connected in series, a plurality of cell gates for selecting the plurality of memory cells within the two adjacent memory cell blocks, each of the plurality of cell gates being formed with roughly rectangular closed loops or roughly U shaped open loops, each of the loops being connected to a corresponding cell of the memory cells in a corresponding memory cell unit of the plurality of memory cell units within one of the two adjacent memory cell blocks and being connected to a corresponding memory cell of the memory cells in a corresponding memory cell unit of the plurality of memory cell units within the other memory cell block of the two adjacent memory cell blocks and a plurality of pairs of first and second selection gates for selecting the memory cell block, the plurality of cell gates being located between one pair of the first and second selection gates within a corresponding block of the memory cell block.