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. 03, 2007
Filed:
Feb. 15, 2005
Takumi Abe, Yokohama, JP;
Hiroshi Maejima, Chigasaki, JP;
Koichi Fukuda, Yokohama, JP;
Takahiko Hara, Yokohama, JP;
Takumi Abe, Yokohama, JP;
Hiroshi Maejima, Chigasaki, JP;
Koichi Fukuda, Yokohama, JP;
Takahiko Hara, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A NAND-structured flash memory comprises a memory cell array wherein plural memory strings are arranged in matrix form, each of the memory cell strings including plural nonvolatile memory cells, the first conducting paths of the memory cells being connected in series, at least one of the memory cells having a function other than an external data storing function, plural first selection transistors having second conducting paths, and one end of the second conducting paths being connected to one end of the series of the first conducting paths, respectively, plural bit lines connected to the other end of the second conducting paths, plural second selection transistors having third conducting paths, and one end of the third conducting paths being connected to one end of the series of the first conducting paths, respectively, and a source line connected to the other end of the third conducting paths.