Patent ID: 6365435
Filing Date: 2002-04-02
Classification: H01L,Y10S

Abstract:
A method for forming a flip-chip semiconductor package, the method comprising the steps of:a) providing: i) a semiconductor die having a plurality of pads thereon, wherein the pads are arranged in a pattern, and wherein at least some of the plurality pads has at least one conductive bump thereon; ii) a substrate having a plurality of conductive locations thereon, wherein at least some of the plurality of conductive locations are arranged in a corresponding pattern, the at least some of the plurality of conductive locations for receiving at least some of the bumps; and iii) underfill; b) heating the substrate to an elevated temperature relative to the temperature of the underfill while dispensing the underfill on the substrate; and c) placing the semiconductor die on the substrate with the underfill therebetween, wherein the at least some of the plurality of pads are substantially aligned with the at least some of the plurality of conductive locations.