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:
Dec. 28, 1993
Filed:
Sep. 05, 1991
Junichi Suyama, Tokyo, JP;
Yasuhiro Tokunaga, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A semiconductor memory device includes a plurality of bit lines, a plurality of memory cells connected to the bit line. The semiconductor memory device also includes control circuits, a first control line and a second control line. The control circuit outputs a control signal. The first control line is formed by a first low resistance conductive layer and is connected to the control circuit to transfer the control signal. The first control signal extends to a first direction. A second control line is formed by a second low resistance conductive layer which is separated from the first conductive layer by an insulating layer. The second control line is connected to the control circuit to transfer the control signal and extends to a second direction which is substantially different from the first direction.