Patent ID: 6066515
Filing Date: 2000-05-23
Classification: H01L

Abstract:
A method of fabricating a multilevel leadframe for electrical connection to a semiconductor die, comprising:forming at least one lead finger and at least one bus bar from a single piece of conductive material;wherein said at least one lead finger is formed to include a segment occupying a first plane, and wherein said at least one lead finger includes a bond end for electrical connection to at least one of a plurality of bond pads disposed on an interior portion of an active surface of said semiconductor die;wherein said at least one bus bar is formed to include a pair of distal lead fingers and a transverse bar extending between said pair of distal lead fingers, said transverse bar extending substantially perpendicular to said at least one lead finger; andcrimping a plurality deformations in each distal lead finger of said pair of distal lead fingers to position said transverse bar and at least a portion of said distal lead fingers in a second plane above said first plane and a distance farther from said plurality of bond pads than said at least one lead finger bond end when said multilevel leadframe is located on said active surface of said semiconductor die, and wherein said transverse bar provides a surface for an electrical connection between said transverse bar and at least one of said plurality of bond pads by extension of at least one conductive element therebetween.