Patent ID: 6989122

Claim:
A method of packaging a semiconductor die comprising: providing a top molding cavity that has a top molding surface with a surface roughness of less than 1.2 R A ; providing a bottom molding cavity that has a bottom molding surface, wherein the top and the bottom molding cavity form a molding chamber; placing the semiconductor die having one or more deformable electrically conductive contacts on a to surface of the die into the molding chamber; lowering the top molding cavity onto the deformable electrically conductive contacts such that the top molding surface deforms the contacts and creates an empty space between the top surface of the semiconductor die and the top molding surface; and injecting a molding compound into the molding chamber such that the molding compound flows through the molding chamber at 1.16 kg/mm 2 and such that the molding compound surrounds the deformable electrically conductive contacts and fills the empty space between the top surface of the semiconductor die and the top molding surface in a way that no flash forms on a top surface of each of the deformable electrically conductive contacts.