Patent ID: 6544812
Filing Date: 2003-04-08
Classification: H01L

Abstract:
A method for assembling of a Tape Automated Bonding (TAB) package, comprising:providing an Integrated Circuit (IC) die; providing a flexible TAB tape, said flexible TAB tape comprising a first or lower layer, a second or center layer and a third or upper layer, said third or upper layer comprising an adhesive layer; attaching said die to a back wall of a cavity in a stiffener using a thermally conductive adhesive; attaching said flexible TAB tape to the stiffener using a tape adhesive; curing said thermally conductive material; bonding copper traces of said flexible TAB tape to corresponding bond pads of the die using wire bond techniques; encapsulating said IC die inside said cavity, enclosing said die and said TAB wire bond connections, using encapsulating material; curing said encapsulating material; applying solder flux to one or more solder balls; applying the one or more solder balls to conductive pads on said flexible TAB tape; re-flow said solder balls by applying heat; cleaning excess solder flux from the conductive pads using an appropriate cleaning agent; and dry baking the TAB package.