Patent ID: 6489557
Filing Date: 2002-12-03
Classification: H01L

Abstract:
An apparatus comprising:a micro BGA (&mgr;BGA) package having a top surface and a bottom surface, said micro BGA package having a substrate comprising polyimide tape, and wherein said micro BGA package is formed without a rigid substrate for providing stiffness and support to said micro BGA package; an integrated circuit die mounted within said micro BGA package for use with a surface mount technology process, said micro BGA package having a uniform size regardless of size of said die mounted within; a plurality of solder balls attached to said bottom surface of said micro BGA package, said plurality of solder balls arranged in a ball grid array with a 0.75 mm ball pitch such that some of said solder balls are coupled to said bottom surface of said micro BGA package directly under said die and others of said solder balls are coupled beyond an area covered by said die; and an encapsulation material covering said micro BGA package, wherein stiffener piece parts have been added to said encapsulation material, said stiffener piece parts to strengthen a portion of said micro BGA package at which solder balls have been coupled beyond said area covered by said die.