Patent ID: 6710265
Filing Date: 2004-03-23
Classification: H01L,H05K,Y10T

Abstract:
A method for assembling ball-grid array (BGA) packages, comprising the steps of:providing a plurality of BGA substrates arranged in an N by M array within an organic printed circuit board having a thickness, wherein N and M are greater than or equal to 2, each of the plurality of BGA substrates having a plurality of bond posts on one side and a plurality of contact pads on an opposite side; attaching a semiconductor die to each of the plurality of BGA substrates, the semiconductor die having a plurality of bond pads; over-molding the semiconductor die with an encapsulant; curing the encapsulant; attaching conductive solder balls to each of the plurality of contact pads; and dividing the N by M array into separate BGA packages; wherein the size of the N by M array and the thickness are selected such that each of the plurality of BGA substrates maintains a planarity variation less than approximately 0.15 mm after assembly.