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:
Jan. 11, 2011
Filed:
Mar. 17, 2010
Lonnie G Johnson, Atlanta, GA (US);
Davorin Babic, Marietta, GA (US);
Lonnie G Johnson, Atlanta, GA (US);
Davorin Babic, Marietta, GA (US);
Johnson Research & Development Co., Inc., Atlanta, GA (US);
Abstract
A method of producing a passivated thin film material is disclosed wherein an insulating thin film layer (), having pinholes () therein, is positioned upon an underlying electrically conductive substrate (). The thin film layer is then electroplated so that the pinholes are filled with a reactive metal. The thin film layer and substrate are then immersed within a silicon doped tetramethylammonium hydroxide (TMAH) solution. Excess silica within the solution precipitates onto the top surfaces of the aluminum plugs () to form an electrically insulative cap which electrically insulates the top of the aluminum plug. As an alternative, the previously described metal plugs may be anodized so that at least a portion thereof becomes an oxidized metal which is electrically insulative.