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:
Oct. 28, 2014
Filed:
Jan. 26, 2012
Applicants:
Soichiro Yoshida, Tokyo, JP;
Yoshimitsu Yanagawa, Tokyo, JP;
Tomonori Sekiguchi, Tokyo, JP;
Akira Kotabe, Tokyo, JP;
Inventors:
Soichiro Yoshida, Tokyo, JP;
Yoshimitsu Yanagawa, Tokyo, JP;
Tomonori Sekiguchi, Tokyo, JP;
Akira Kotabe, Tokyo, JP;
Assignee:
PS4 Luxco S.A.R.L., Luxembourg, LU;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 29/66 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor memory device includes: a sense amplifier; a plurality of memory cell arrays; a shared MOS transistor that connects/disconnects the sense amplifier and a bit line included in the memory cell arrays; and a control circuit that controls operation of the shared MOS transistor. A part or whole of an in-sense-amplifier bit line that is a bit line connecting the sense amplifier and the shared MOS transistor is embedded in a semiconductor substrate.