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:
Jun. 03, 2008
Filed:
Jun. 09, 2005
Yasuhiko Matsunaga, Yokohama, JP;
Fumitaka Arai, Yokohama, JP;
Makoto Sakuma, Yokohama, JP;
Tadashi Iguchi, Yokohama, JP;
Hisashi Watanobe, Yokkaichi, JP;
Hiroaki Tsunoda, Yokkaichi, JP;
Yasuhiko Matsunaga, Yokohama, JP;
Fumitaka Arai, Yokohama, JP;
Makoto Sakuma, Yokohama, JP;
Tadashi Iguchi, Yokohama, JP;
Hisashi Watanobe, Yokkaichi, JP;
Hiroaki Tsunoda, Yokkaichi, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A nonvolatile semiconductor memory includes memory cell units, each having memory cell transistors aligned in a column direction and capable of writing and erasing electronic data; and contacts on active areas, arranged on both sides of memory cell unit arrays in which the memory cell units are serially connected in the column direction, and the contacts on active areas are shared by the memory cell unit arrays; wherein, the respective memory cell unit arrays are located having a periodical shift length equal to and or more than the integral multiple length of the periodical length of the memory cell units aligned in the column direction so as to be staggered from each other as compared with neighboring memory cell unit arrays aligned in the row direction.