Patent ID: 8114707
Filing Date: 2012-02-14
Classification: H01L

Abstract:
1. A method of forming a multi-chip assembly of semiconductor chips comprising: forming a stacked substrate assembly by bonding a semiconductor substrate to a temporary substrate through an array of first solder balls that bonds to an array of first solder pads on said semiconductor substrate; dicing said stacked substrate assembly to form a plurality of stacked temporary structures, each of said plurality of stacked temporary structures comprising a first semiconductor chip that is a portion of said semiconductor substrate and a handle portion that is a portion of said temporary substrate; bonding a second semiconductor chip to a stacked temporary structure among said plurality of stacked temporary structures, wherein an array of second solder balls is bonded to an array of second solder pads located on a first semiconductor chip in said stacked temporary structure and an array of third solder pads located on said second semiconductor chip; detaching a handle portion from said stacked temporary structure to form a stacked semiconductor chip structure; and forming a multi-chip assembly of semiconductor chips by bonding at least one stacked semiconductor chip structure including said stacked semiconductor chip structure to a packaging substrate.