Patent ID: 6707136
Filing Date: 2004-03-16
Classification: G11C,H01L

Abstract:
A lead frame having at least two layers and a semiconductor die comprising:a first conducting lead frame body including a die paddle for supporting a semiconductor die, the die paddle having a perimeter, at least one first main lead finger depending from the die paddle, a first lead finger bar depending solely from the at least one first main lead finger supporting a first plurality of lead fingers extending from the first lead finger bar adjacent a first portion of the perimeter of the die paddle; a second conducting lead frame body including a plate and at least one second main lead finger depending from the plate; at least one additional lead frame segment including one lead finger bar supporting an additional plurality of lead fingers, the lead fingers of the at least one additional lead finger segment extending from the first lead finger bar to adjacent one of the die paddle and the plate; a dielectric material disposed between and substantially touching the die paddle and the plate, the dielectric material being selected from a group consisting of a polyimide and an adhesive tape; and a semiconductor die attached to the die paddle having wire bonds to the at least one first and at least one second main lead fingers and the first and additional pluralities of lead fingers.