Patent ID: 6175158
Filing Date: 2001-01-16
Classification: H01L

Abstract:
An IC package comprising:a. a printed wiring board (PWB),b. a series of PWB bonding pads on said PWB,c. an interposer, said interposer comprising:i. a picture frame structure with a first side and a second side, and an opening at least partially through said picture frame structure,ii. a first array of interposer bonding pads on said first side of said picture frame structure,iii. a second array of interposer bonding pads on said second side of said picture frame structure, with said second array of interposer bonding pads and said first array of interposer bonding pads approximately aligned vertically through the thickness of the interposer, said second array of interposer bonding pads connected to said series of PWB bonding pads,d. a silicon on silicon interconnection module comprising:i'. a silicon interconnection substrate having an upper surface and a lower surface and an area A,ii'. a first array of substrate bonding pads in the center of the lower surface of the silicon interconnection substrate adapted to be interconnected to a silicon IC chip,iii'. a second array of substrate bonding pads around the first array of substrate bonding pads, andiv'. at least one silicon IC chip having a circuit side and an underside and an area A' where A>4A', with an array of IC chip bonding pads on said circuit side of said silicon IC chip, said array of IC chip bonding pads bonded to said first array of substrate bonding pads,said silicon on silicon interconnection module (b) being bonded to said interposer (a), with said second array of substrate bonding pads being bonded to said first array of interposer bonding pads, and with said silicon on silicon interconnection module at least partially recessed in said opening in said interposer.