Patent ID: 6232148
Filing Date: 2001-05-15
Classification: H01L

Abstract:
A method of assembling a multi-die semiconductor die assembly, comprising the steps of:providing a first die having a face surface, with said first die face surface having a configuration of bond pads positioned thereon;providing a second die having a face surface, with said second die face surface having a plurality of bond pads positioned thereon in a configuration different by at least one bond pad location from said first die bond pad configuration;providing a leadframe having a first side and a second side, and a plurality of lead finger elements of differing length, orientation or configuration;attaching said face surface of said first die to said leadframe first side, wherein at least some of said first die bond pads are in electrical communication with at least some of said plurality of lead finger elements;forming at least one layer of passivation material over said face surface of said first die and over said leadframe; andplacing said second die over said at least one layer of passivation material and attaching said face surface of said second die to said leadframe second side with a portion of said at least one layer of passivation material disposed therebetween and wherein at least some of said second die bond pads are in electrical communication with at least some of said plurality of lead finger elements.