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:
Apr. 02, 1991
Filed:
Jun. 20, 1989
William L Larson, Colorado Springs, CO (US);
Ramtron Corporation, Colorado Springs, CO (US);
Abstract
Disclosed is a multilayer capacitor structure in an integrated circuit, including a first electrode constructed by forming at least one layer over a substrate and forming a plate layer over the previous layer(s). A dielectric layer is formed over this first electrode, and a second electrode is established over the dielectric layer by forming a plate layer over the dielectric layer, and forming at least one additional layer over the plate layer. Each layer may serve one or more functions. Also disclosed is a further embodiment including constructing a first electrode by forming at least one layer on a substrate, forming a plate layer over the previous layer(s), and forming a dielectric layer over the first electrode. The resulting structure is then heated, preferably in an oxygen ambient, to oxidize the lower layer. A second electrode can then be formed over the dielectric layer.