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:
Apr. 03, 2012
Filed:
Sep. 17, 2010
Tomonori Kurosawa, Yokohama, JP;
Takahiko Sasaki, Tokyo, JP;
Kazushige Kanda, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a semiconductor memory device includes a memory cell array includes memory cells, lines provided to correspond to the memory cells, a first decoder configured to select a first line as an inspection target from the lines, a second decoder configured to select a second line for generating a reference voltage from the lines, a driver configured to charge the first and second lines, a discharging circuit configured to simultaneously discharge the first and second lines, and a sense amplifier configured to compare a voltage of the first line with a voltage of the second line to detect a defect of the first line while the first line is discharged.