Patent ID: 6297551
Filing Date: 2001-10-02
Classification: H01L,H05K

Abstract:
An IC MCM package comprising:a. a printed circuit board (PCB) with a top surface and a bottom surface and an edge between said top surface and said bottom surface, and having a cavity formed in the top surface, said cavity having a sidewall surface and a bottom surface, a first metal electromagnetic interference (EMI) layer enclosing said cavity, and a first array PCB interconnection site on the top side of said PCB,b. a multichip module (MCM) comprising:i. an interconnection substrate (IS) with a top side and a bottom side and a peripheral edge between said top side and said bottom side, said IS having a first array of IS interconnection sites on said bottom side and adapted for interconnection to an IC chip, said IS having a second metal EMI layer covering said top side and said peripheral edge,ii. a second array of IS interconnection sites on the bottom side of the interconnection substrate said second array of IS interconnection sites adapted for interconnection with said first array of PCB interconnection sites, andiii. at least one IC chip with an array of IC chip interconnection sites on said IC chip, said IC chip being flip chip bonded to the bottom side of said IS with said array of chip interconnection sites bonded to said to a first array of IS interconnection sites, said IC chip extending into said cavity,said MCM interconnected to said PCB with said second array of IS interconnection sites bonded to said first array of PCB interconnection sites leaving a space between said first metal EMI layer and said second metal EMI layer,the IC MCM package further including:c. a solder wall on said PCB extending around said IS and attached to the edge of said IS and attached to said PCB so as to fully enclose said space between said first metal EMI layer and said second metal EMI layer.