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:
Mar. 18, 2014
Filed:
Sep. 30, 2011
Yuzuru Namai, Kanagawa-ken, JP;
Yuzuru Namai, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A semiconductor memory device includes a plurality of memory cell data holding transistors provided in each block; a row decoder including transfer transistors, a voltage controller and a block selector in each block, the transfer transistors electrically connected to respective of the memory cell transistors, the voltage controller connected to gates of the respective transfer transistors and transferring a desired voltage to the gates of the respective transfer transistors, the block selector electrically connected to gates of the respective transfer transistors and configured to select blocks. A voltage generator generates the voltage to be supplied to the transfer transistors; and a controller controls the row decoder and the voltage generator circuit. When data is written, the gates of the respective transfer transistors are connected to the voltage controller in each non-selected block, and the gates of the respective transfer transistors are disconnected from the voltage controller in each selected block.