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:
Jul. 10, 2001
Filed:
Oct. 04, 1999
Natalie Barbara Feilchenfeld, Endwell, NY (US);
John Steven Kresge, Binghamton, NY (US);
Scott Preston Moore, Apalachin, NY (US);
Ronald Peter Nowak, Endicott, NY (US);
James Warren Wilson, Vestal, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
The present invention provides an organic chip carrier particularly useful with flip chips. The chip carrier comprises an organic dielectric layer, a first layer of circuitry disposed on the dielectric layer, an organic conformational coating disposed over the first layer of dielectric and the first layer of circuitry, and a layer of fine line circuitry. The fine line circuitry has a line width of about 2.0 mil or less, preferably about 1.0 mil or less, and more preferably about 0.7 mil, and a space between lines of about 1.5 mil or less, preferably about 1.1 mil or less. Preferably the dielectric layer is free of woven fiber glass. The conformational coating preferably has a dielectric constant of about 1.5 to about 3.5, and a percent planarization of greater than about 30%. The invention also relates to methods of making the dielectric coated chip carrier.