Wiring board and circuit module

Details Wiring board and circuit module Wiring board and circuit module

2006-10-17

2006-10-17

Owens, Douglas W. (Department: 2811)

Active solid-state devices (e.g., transistors, solid-state diode

With shielding

With means to shield device contained in housing or package...

C257S662000, C257S501000, C257S508000, C257S659000

Reexamination Certificate

active

07122881

ABSTRACT:
A wiring board houses a bare radio-frequency IC. Shield wiring films are provided above and below the IC. A plurality of shield interlayer-connection conductor films, i.e., shield via-holes, is provided so as to surround the IC. The shield wiring films and the shield interlayer-connection conductor films define a shield cage, which can electrostatically shield the IC. Thus, there is no need to attach a shield cap.

REFERENCES:
patent: 5639989 (1997-06-01), Higgins, III
patent: 5796170 (1998-08-01), Marcantonio
patent: 2001-077537 (2001-03-01), None

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