Electricity: conductors and insulators – Conduits – cables or conductors – Preformed panel circuit arrangement
Reexamination Certificate
2008-02-20
2011-11-29
Norris, Jeremy (Department: 2841)
Electricity: conductors and insulators
Conduits, cables or conductors
Preformed panel circuit arrangement
C257S750000, C361S761000, C361S783000
Reexamination Certificate
active
08067699
ABSTRACT:
An intermediate layer38is provided on a die pad22of an IC chip20and integrated into a multilayer printed circuit board10. Due to this, it is possible to electrically connect the IC chip20to the multilayer printed circuit board10without using lead members and a sealing resin. Also, by providing the intermediate layer38made of copper on an aluminum pad24, it is possible to prevent a resin residue on the pad24and to improve connection characteristics between the die pad24and a via hole60and reliability.
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Sakamoto Hajime
Wang Dongdong
Ibiden Co. Ltd.
Norris Jeremy
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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