Patent ID: 6856010
Filing Date: 2005-02-15
Classification: H01L

Abstract:
1. A semiconductor die stack comprising: at least two semiconductor dies vertically stacked upon each other, each semiconductor die defines opposed top and bottom surfaces and opposed pairs of longitudinal and lateral side surfaces; leads which extend out from at least one of the side surfaces of each of the semiconductor dies, the leads define first end portions, middle portions, second end portions, first junctions and second junctions, the second junctions of the leads of the upper semiconductor die are electrically connected to respective ones of the first junctions of the leads of the lower semiconductor die, the first and second junctions of the leads of the upper and lower semiconductor dies are bent in opposing directions; the middle portions of the leads of the upper semiconductor die being electrically connected to respective ones of the first junctions of the leads of the lower semiconductor die; the first junctions of the leads of the upper and lower semiconductor dies having a bend radii, bend distances, and bend angles, the bend radii, bend distances and bend angles of the first junctions of the leads of the upper and lower semiconductor dies being equal to each other; and the second junctions of the leads of the upper semiconductor die have a flared ski tip configuration.