Patent ID: 6534342
Filing Date: 2003-03-18
Classification: H01L,Y10T

Abstract:
A method for attaching a semiconductor die having an active surface to a portion of a lead frame having a plurality of lead fingers thereon, at least one lead finger of said plurality of lead fingers having an attaching surface, said method comprising:selecting an adhesive from a group of adhesives comprising a tacky and compliant polymer adhesive at room temperature, said polymer adhesive including a first material from a group that includes isobutyl acetal diphenol copolymer and a second material that is from a group including metal oxides; applying said polymer adhesive in one of at least one line of polymer adhesive and a plurality of beads of polymer adhesive on one of at least a portion of said active surface of said semiconductor die and said attaching surface of said at least one lead finger, said polymer adhesive at room temperature; and urging said active surface of said semiconductor die against said attaching surface of said at least one lead finger of said plurality of lead fingers of said lead frame while at room temperature for attaching said attaching surface of said at least one lead finger of said plurality of lead fingers of said lead frame and said active surface of said semiconductor die.