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:
Mar. 02, 1993
Filed:
Jun. 01, 1990
Seiko Epson Corporation, Nagano, JP;
Abstract
A semiconductor device includes a substrate, first insulating film carried on the substrate, first wiring layer carried on the first insulating film and an interlayer insulating film overlying the first wiring layer and first insulating film. The interlayer insulating film has a top portion overlying the first wiring layer and a pair of sidewall portions. The sidewall portions of the interlayer insulating film overlie the first insulating film and the sides of the first wiring layer. The sidewall portions have progressively increasing width in progressing towards the substrate. The device also includes a second wiring layer which extends from overlying part of the top portion of the interlayer insulating film to and in contact with an exposed portion of the substrate adjacent to the first insulating film.