Fishing – trapping – and vermin destroying
Patent
1995-05-15
1997-05-20
Picardat, Kevin M.
Fishing, trapping, and vermin destroying
437209, 437211, 437214, 437217, H01L 2160
Patent
active
056311915
ABSTRACT:
A polymer lead-frame is made from a flexible substrate with flexible conductive traces. The generally square lead-frame has diagonal cutouts partially extending from the corners towards the center, as well as a central hole that lies within a footprint of the die. The die is bonded directly to the lead frame, preferably with anisotropic, electrically conductive adhesive. The die is placed with the lead frame in a fixture. A holding force is applied to secure the die and, if necessary, a curing force is applied during a cure cycle. The fixture allows transport of the assembly to a curing oven and allows application of the curing force. The die has contact pads characterized by a non-planar, non-bump-like surface with concavities having depths of at least about one-seventh the diameter of conductive particles in the anisotropic conductive adhesive.
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Durand David
Iannetta, Jr. Roger A.
Wong Chon M.
Picardat Kevin M.
Poly-Flex Circuits, Inc.
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