Patent ID: 6488795
Filing Date: 2002-12-03
Classification: H01L,H05K,Y10S,Y10T

Abstract:
A method of producing a multilayered ceramic substrate comprising:providing a green composite laminate comprising a plurality of stacked ceramic green sheets to be laminated and conductive paste for forming at least one internal wiring conductor in association with at least one of the ceramic green sheets, and having metallic foils arranged to cover both main surfaces of the green composite laminate comprising the plurality of ceramic green sheets and to hold the green composite laminate therebetween in the direction of lamination; burning the green composite laminate at a temperature lower than the melting point of the metal which constitutes the metallic foils while the metallic foils are suppressing shrinkage in the direction parallel to the main surfaces; and patterning the metallic foils by photolithographic etching after the burning step.