Patent ID: 7088568

Claim:
A method for manufacturing a multilayer ceramic substrate by firing multilayers of ceramic green sheets each having a dielectric layer made of a glass-ceramic material and an electrode layer made of silver and formed on the dielectric layer, characterized as comprising the steps of: providing multilayers of ceramic green sheets each having an electrode layer formed on a dielectric layer such that, after firing, at least one said electrode layer which is separated by the dielectric layer from the adjacent electrode layer in the substrate has an overlapping area of 0.4 mm 2 or smaller with the adjacent electrode; and firing said multilayers of the ceramic green sheets at a selected temperature such that, after firing, an interface between said dielectric layer and said electrode layer in the substrate has irregularities with a roughness Rmax of 6 μm or less per 100 μm standard length and the dielectric layer has a saturation sintered density.