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:
Oct. 09, 2007
Filed:
Dec. 16, 2003
Slawomir Rubinsztajn, Niskayuna, NY (US);
John Robert Campbell, Clifton Park, NY (US);
Ananth Prabhakumar, Schenectady, NY (US);
Sandeep Tonapi, Niskayuna, NY (US);
Slawomir Rubinsztajn, Niskayuna, NY (US);
John Robert Campbell, Clifton Park, NY (US);
Ananth Prabhakumar, Schenectady, NY (US);
Sandeep Tonapi, Niskayuna, NY (US);
General Electric Company, Schnectady, NY (US);
Abstract
An underfill composition with enhanced adhesion and improved resistance to cracking comprising an epoxy resin in combination with a difunctional siloxane anhydride epoxy hardener and optional reagents. In some embodiments, the epoxy resin includes a functionalized colloidal silica filler having a particle size ranging from about 1 nm to about 500 nm. The difunctional siloxane anhydride epoxy hardener can optionally be combined with liquid anhydride epoxy hardeners. Cure catalysts, hydroxyl-containing monomers, adhesion promoters, flame retardants and defoaming agents may also be added to the composition. Further embodiments of the present disclosure include packaged solid state devices comprising the underfill compositions.