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. 23, 1993
Filed:
Dec. 26, 1991
Tohru Furuyama, Tokyo, JP;
Hiroyuki Noji, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
There is provided a semiconductor memory including a plurality of word lines, a plurality of bit lines intersecting the word lines, and a memory cell array having memory cells arranged at respective intersections of the word lines and bit lines. Word line selecting circuits select the word lines in accordance with an address signal and word line driving circuits are connected to the word lines for driving selected word lines. Selective stress applying circuitry selectively applies stress, during a stress test, to word lines in one of a plurality of word line groups into which all word lines are classified. The selective stress applying circuits includes an arrangement of MOS transistors and pads for applying stress to a word line group during the stress test.