Patent ID: 6323439
Filing Date: 2001-11-27
Classification: H05K,Y10T

Abstract:
A multilayer resin wiring board comprising:a metal core substrate having a first main surface and a second main surface;a plurality of wiring layers located on the first and second main surfaces of said metal core substrate;a plurality of insulating resin layers, each intervening between said metal core substrate and said wiring layers, or between said metal core substrate and said wiring layers and between said wiring layers; anda via formed on a wall of a through hole for connection to said metal core substrate extending through said insulating resin layers and said metal core substrate so as to establish electrical conductivity to said metal core substrate;wherein said metal core substrate has a thin portion which is thinner than a remaining portion of the metal core substrate,wherein the through hole for connection to said metal core substrate is formed through said thin portion.