Patent ID: 6596382
Filing Date: 2003-07-22
Classification: H01L,H05K,Y10T

Abstract:
A multilayered board comprising a laminate comprising a plurality of glass-containing insulating layers,each glass-containing insulating layer being provided with an electrode on the surface thereof, wherein the glass-containing insulating layer comprises a fired layer made of a material containing an insulating component and 60% by volume or less of a glass component before firing, a portion of the glass component is segregated in the surface region of the glass-containing insulating layer, and the electrode is bonded to the surface of the glass-containing insulating layer by the segregated glass component, and wherein the glass component content is in the range of 60% to 90% by volume within a depth of 1 &mgr;m from the surface of the glass-containing insulating layer provided with the electrode.