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:
Feb. 12, 2019
Filed:
Oct. 17, 2017
Renesas Electronics Corporation, Koutou-ku, Tokyo, JP;
RENESAS ELECTRONICS CORPORATION, Tokyo, JP;
Abstract
A semiconductor memory device according to the present invention includes a first memory cell, a second memory cell, a dummy transistor, and a voltage control circuit. The first memory cell has a first transistor that is coupled to a first word line, a first source line, and a bit line. The second memory cell has a second transistor that is coupled to a second word line, a second source line, and the bit line. The dummy transistor has the same structure as the first transistor and is coupled to a dummy word line, a dummy source line, and a dummy bit line. When a predetermined voltage for writing data into the first memory cell is to be applied to the first word line, the voltage control circuit couples the dummy bit line to the second source line and applies the predetermined voltage to the first dummy word line.