Multilayer printed circuit board

Details Multilayer printed circuit board Multilayer printed circuit board

2004-03-04

2008-10-14

Dinh, Tuan T (Department: 2841)

Electricity: conductors and insulators

Conduits, cables or conductors

Preformed panel circuit arrangement

C174S262000, C174S263000, C361S767000, C361S795000

Reexamination Certificate

active

07435910

ABSTRACT:
A multilayer printed circuit board has an IC chip20included in a core substrate30in advance and a transition layer38provided on a pad24of the IC chip20. Due to this, it is possible to electrically connect the IC chip to the multilayer printed circuit board without using lead members and a sealing resin. Also, by providing the transition layer38made of copper on the die pad24, it is possible to prevent resin residues on the pad24and to improve connection characteristics between the pad24and a via hole60and reliability.

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