Patent ID: 6848178
Filing Date: 2005-02-01
Classification: H01L,H05K,Y10T

Abstract:
1. A method for manufacturing a multilayer circuit board, in which a plurality of insulating layers and a plurality of conductive layers, each of which includes conductive patterns, are laminated, the method comprising: preparing a conductive pattern film, the preparing including: forming a conductive pattern on an insulating layer, the conductive pattern continuously extending along a surface of the insulating layer for at least a predetermined length on a surface of the insulating layer; forming a trench in the insulating layer which is adjacent to the conductive pattern, the trench continuously extending along the conductive pattern for the predetermined length; and packing a low resistivity conductive paste, which includes metal particles, in the trench; stacking the conductive pattern film and an insulating layer to form a stacked body; and heat pressing the stacked body such that the insulating layers bond together, the conductive paste is sintered to form a conductive compound, which is electrically connected to the conductive pattern, and the conductive compound in the trench and the conductive pattern form a conductive wire that has a higher current-carrying capacity with respect to a direction parallel to the surface of the insulating layer than that of the conductive pattern only.