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. 29, 2000
Filed:
Nov. 14, 1997
Applicant:
Inventor:
Masato Sakao, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
257306 ; 257309 ; 257296 ;
Abstract
A storage capacitor with a double cylindrical storage electrode is incorporated in a semiconductor dynamic random access memory cell, the double cylindrical storage electrode is electrically connected through a node contact hole to a source region of a switching transistor, the double cylindrical storage electrodes are offset from the associated node contact holes so as not to have the minimum dimension in the planar configuration thereof, and cylinders are multiplied on a base portion of the storage electrode.