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:
Dec. 15, 2015
Filed:
Dec. 13, 2013
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Takamasa Okawa, Yokkaichi, JP;
Takayuki Tsukamoto, Yokkaichi, JP;
Yoichi Minemura, Yokkaichi, JP;
Hiroshi Kanno, Yokkaichi, JP;
Atsushi Yoshida, Yokkaichi, JP;
KABUSHIKI KAISHA TOSHIBA, Minato-ku, JP;
Abstract
A semiconductor memory device has a memory cell array including memory cells, the memory cell being disposed at an intersection of first lines and second lines, the second lines being disposed intersecting the first lines, and the memory cell including a variable resistance element; and a control circuit. The control circuit is configured to execute a forming operation sequentially on a plurality of the memory cells. The control circuit applies a forming voltage to a selected memory cell of the memory cells, and controls the forming voltage such that the forming voltage is lower as the forming operation progresses.