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. 24, 2004
Filed:
Dec. 06, 2000
Ichiro Yamamoto, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A semiconductor device in which a cell capacitor with an MIM or MIS structure is formed using a conductive material with a low resistivity for the upper electrode and a resistance element is formed using a conductive material with high resistance without increasing the complexity of the fabrication process. A plate electrode used for the upper electrode of the cell capacitor and for the resistance element is made by forming a three-layer structure including a low resistance conductive material layer, an insulating film layer on the low resistance conductive material layer, and a high resistance conductive material layer on the insulating film layer, patterning the three-layer structure in the same shape, and using the low resistance conductive material layer as the upper electrode of the cell capacitor and the high resistance conductive material layer as the resistance element.