Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Reexamination Certificate
2006-03-28
2006-03-28
Lam, Cathy F. (Department: 1775)
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
C428S901000, C174S250000, C174S262000, C174S264000
Reexamination Certificate
active
07018705
ABSTRACT:
It is an object of the present invention to provide a multilayer circuit board, and a method for manufacturing the same, in which a plurality of circuit boards are layered, wherein as regards at least one circuit board positioned on an outer side, a conductive substance is filled into holes passing through the circuit board in the thickness direction and cured, and the wiring layers of the plurality of circuit boards are electrically connected by the conductive substance that has been cured, wherein in the multilayer circuit board, the wiring layer positioned outside the conductive substance that has been cured projects outward from its surroundings. Thus, the conductive paste is sufficiently compressed during hot pressing to yield a stable electrical connection, and thermosetting resin can be filled in between the inner layer wiring pattern without leaving gaps.
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Echigo Fumio
Higashitani Hideki
Nakamura Tadashi
Nakatani Yasuhiro
Hamre Schumann Mueller & Larson P.C.
Lam Cathy F.
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