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. 28, 1998
Filed:
May. 05, 1997
James P Letterman, Jr, Mesa, AZ (US);
Reginald K Asher, Sr, Scottsdale, AZ (US);
Reginald K Asher, II, Phoenix, AZ (US);
Mohan Lal Sanduja, Flushing, NY (US);
Felicia B Dragnea, Forest Hills, NY (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A polymeric organic coating (24) used to package a semiconductor component (10) increases voltage isolation, decreases thermal resistance, and increases scratch and abrasion resistance for the semiconductor component (10). The coating (24) is applied to a leadframe (14) of the semiconductor component (10) using a chemical grafting process that involves the use of monomers, prepolymers, a catalyst, a graft initiator, and other ingredients. The coating (24) forms a polymeric organic film that is chemically bonded to the surfaces of the leadframe (14). The chemical grafting process produces a chemical bond, which improves adhesion between the coating (24) and the leadframe (14).