Patent ID: 6781245
Filing Date: 2004-08-24
Classification: H01L,H05K,Y02P

Abstract:
A solder ball array type package structure able to control collapse, comprising at least:a substrate having at least a first surface; a plurality of pads provided on the first surface of the substrate; a carrier having at least a top surface and a lower surface opposite the top surface; a die provided on the top surface of the carrier, wherein the die is electrically connected to the carrier; a molding compound encapsulating the top surface of the carrier and the die thereon; and a plurality of solder balls arranged on the lower surface of the carrier in array, wherein a portion of the solder balls have a solder coating and a HMT core, the solder coating covers the HMT core, and the portion of the solder balls with the solder coating and the HMT core is at least three, wherein the carrier is arranged such that the lower surface faces the first surface of the substrate to allow each solder ball correspond to one of the pads, respectively.