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. 14, 2006
Filed:
May. 01, 2003
Francesco Ciovacco, Milan, IT;
Simone Alba, Milan, IT;
Roberto Colombo, Lentate sul Seveso, IT;
Chiara Savardi, Brescia, IT;
Francesco Ciovacco, Milan, IT;
Simone Alba, Milan, IT;
Roberto Colombo, Lentate sul Seveso, IT;
Chiara Savardi, Brescia, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
A method for manufacturing semiconductor-integrated electronic circuits includes: depositing an auxiliary layer on a substrate; depositing a layer of screening material on the auxiliary layer; selectively removing the layer of screening material to provide a first opening in the layer of screening material and expose an area of the auxiliary layer; and removing this area of the auxiliary layer to form a second opening in the auxiliary layer, whose cross-section narrows toward the substrate to expose an area of the substrate being smaller than the area exposed by the first opening.