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. 19, 2005
Filed:
Jun. 24, 2002
Helen M. Murray, Tipperary, IE;
Jonathan P. Wigham, Dublin, IE;
John E. Cahill, Kildare, IE;
Aisling Lakes, Dublin, IE;
Matthew J. Holloway, Kildare, IE;
Eadaoin D. Ledwidge, Dublin, IE;
Mary B. Ward, Dublin, IE;
Helen M. Murray, Tipperary, IE;
Jonathan P. Wigham, Dublin, IE;
John E. Cahill, Kildare, IE;
Aisling Lakes, Dublin, IE;
Matthew J. Holloway, Kildare, IE;
Eadaoin D. Ledwidge, Dublin, IE;
Mary B. Ward, Dublin, IE;
Loctite (R&D) Limited, Dublin, IE;
Abstract
The present invention is directed to a photocurable composition for use as an encapsulant, for underfill or attachment adhesives, capable of curing at wavelengths greater than 290 nm. Reaction products of these photocurable compositions have a low level of extractable halide ion, such as less than 100 ppm. In use, the photocurable composition may be applied, for instance, over the wire bonds that electrically connect a semiconductor device to a substrate to maintain a fixed positional relationship and protect the integrity of the electrical connection from vibrational and shock disturbances, as well as from interference from environmental contaminants.