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. 16, 1988
Filed:
Nov. 01, 1984
Applicant:
Inventors:
Mitsugi Ogura, Yokohama, JP;
Fujio Masuoka, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365201 ; 365149 ;
Abstract
A voltage applying circuit is adapted to a semiconductor memory device comprising a plurality of memory cells which each include MOS memory capacitors one terminal of each being connected to a common point. The output terminal of the voltage applying circuit is connected to the common point of the MOS capacitor, and a low voltage for normal operation of the MOS capacitor and a screening voltage for distinguishing a memory device, which is higher than that voltage, are selectively applied to the common connection point.