Printed wiring board and method for manufacturing the same

Details Printed wiring board and method for manufacturing the same Printed wiring board and method for manufacturing the same

2008-03-04

2008-03-04

Dinh, Tuan T. (Department: 2841)

Electricity: conductors and insulators

Conduits, cables or conductors

Preformed panel circuit arrangement

C029S830000, C029S832000, C174S262000

Reexamination Certificate

active

09380994

ABSTRACT:
In a printed wiring board, an odd number (n) of conductive layers (11-13) and insulating layers (21-23) are alternately laminated upon each other. The first conductive layer (11) is a parts connecting layer and the n-th conductive layer (13) is an external connecting layer which is connected to external connecting terminals (7). The second to (n−1)-th conductive layers (12) are current transmitting layers for transmitting internal currents. The surface of the n-th insulating layer (23) in a state where the external connecting terminals (7) are exposed on the surface. It is preferable to make the initial insulating layers of a glass-cloth reinforced prepreg and the external insulating layers of a resin.

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