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:
Nov. 14, 1995
Filed:
Aug. 18, 1994
Masanobu Yoshida, Kawasaki, JP;
Kiyonori Ogura, Kasugai, JP;
Fujitsu Limited, Kanagawa, JP;
Fujitsu VLSI Limited, Aichi, JP;
Abstract
An electrically programmable and electrically erasable non-volatile semiconductor memory device having an array of single transistor cells is provided. The disclosed device protects against reading faults even in the event that adjacent transistors may be over erased. Each of the cell transistor rows has an associated word line and an associated select element. The select elements are connected to the sources of their associated cell transistors and are arranged to activate those cell transistors only when their associated word line is selected. Cell transistors in unselected rows are not activated and thus do not interfere with reading even if they are in an over erased condition.