Patent ID: 7545029
Filing Date: 2009-06-09
Classification: H01L

Abstract:
1. A stacked microelectronic assembly comprising: a base substrate having a top surface, a bottom surface and conductive elements projecting from the bottom surface thereof; a first microelectronic subassembly underlying the bottom surface of said base substrate, said first microelectronic subassembly including a first dielectric substrate, a first microelectronic element connected with said first dielectric substrate and first conductive posts projecting from said first dielectric substrate toward the bottom surface of said base substrate for electrically interconnecting said first microelectronic element and said base substrate, said first conductive posts having at least one of cylindrical or frusto-conical shape; a second microelectronic subassembly overlying the top surface of said base substrate, said second microelectronic subassembly including a second dielectric substrate, a second microelectronic element connected with said second dielectric substrate and second conductive posts projecting from said second dielectric substrate toward the top surface of said base substrate for electrically interconnecting said second microelectronic element and said base substrate, wherein said first microelectronic subassembly has a first height and said conductive elements projecting from the bottom surface of said base substrate have a second height that is greater than the first height of said first microelectronic subassembly.