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:
May. 05, 1998
Filed:
Jun. 21, 1996
Applicant:
Inventors:
Hiroshi Matsuo, Hyogo, JP;
Shinya Watanabe, Hyogo, JP;
Yuichi Yokoyama, Hyogo, JP;
Shinya Inoue, Hyogo, JP;
Assignees:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Ryoden Semiconductor System Engineering Corporation, Hyogo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; G11C / ; G11C / ;
U.S. Cl.
CPC ...
257296 ; 365 51 ; 365210 ;
Abstract
An improved semiconductor memory device in which an electric circuit operates normally is provided. A block of memory cells of a dynamic random access memory is provided on a semiconductor substrate. A dummy storage node is provided near a corner portion of the memory cell block. A dummy cell plate is provided such that it covers the dummy storage node and is electrically insulated from a main cell plate of the DRAM.