Patent ID: 6461897
Filing Date: 2002-10-08
Classification: H01L

Abstract:
A method of producing a multichip module, comprising the steps of:providing a substrate having a structure for making external electrical connection; attaching a first semiconductor chip onto the substrate, the first semiconductor chip having a first row of bonding pads formed on an active surface thereof and disposed along one side edge thereof; attaching a second semiconductor chip onto an active surface of the first semiconductor chip, the second semiconductor chip having a second row of bonding pads formed on an active surface thereof and disposed along one side edge thereof, wherein no portion of the second semiconductor chip interferes with a vertical line of sight of each bonding pad of the first row to permit wire bonding to the bonding pads of the first row, and the first row and the second row are substantially parallel and opposing to each other; electrically coupling the bonding pads of the first and second rows to the structure for making external electrical connection; and attaching a third semiconductor chip onto the active surface of the second semiconductor chip, the third semiconductor chip having a third row of bonding pads formed on an active surface thereof and disposed along one side edge thereof, wherein no portion of the third semiconductor chip interferes with a vertical line of sight of each bonding pad of the first row and the second row, the third row is substantially perpendicular to the first and second rows, and a width of the third semiconductor chip, as measured in a direction perpendicular to the first and second rows, is smaller than a distance separating the first row and the second row.