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. 01, 2005
Filed:
Nov. 18, 2002
Qwai H. Low, Cupertino, CA (US);
Ramaswamy Ranganathan, Saratoga, CA (US);
Rey Torcuato, San Jose, CA (US);
Qwai H. Low, Cupertino, CA (US);
Ramaswamy Ranganathan, Saratoga, CA (US);
Rey Torcuato, San Jose, CA (US);
LSI Logic Corporation, Milpitas, CA (US);
Abstract
A test structure for an integrated circuit having a first underlying conductive layer. A first nonconductive layer is disposed over the first underlying conductive layer, and a first overlying conductive layer is disposed over the first nonconductive layer. First conductive vias form electrical connections between the first underlying conductive layer and the first overlying conductive layer. A second overlying conductive layer is disposed over the first nonconductive layer, but the second overlying conductive layer does not make electrical connections to the first underlying conductive layer. The test structure also has a second underlying conductive layer. A second nonconductive layer is disposed over the second underlying conductive layer, with a third overlying conductive layer disposed over the second nonconductive layer. The third overlying conductive layer does not make electrical connections to the second underlying conductive layer. A fourth overlying conductive layer is disposed over the second nonconductive layer, and second conductive vias form electrical connections between the second underlying conductive layer and the fourth overlying conductive layer. First conductive traces form electrical connections between the first overlying conductive layer and the third conductive layer, and second conductive traces form electrical connections between the second overlying conductive layer and the fourth conductive layer.