Patent ID: 7348069
Filing Date: 2008-03-25
Classification: H01G,H01L,H05K,Y10S,Y10T

Abstract:
1. A ceramic substrate for thin-film electronic components, the substrate including a base ceramic substrate, a wiring pattern inside said base ceramic substrate, and a glaze layer formed on at least one surface of the base ceramic substrate, characterized in that the glaze layer has a surface having an arithmetical mean roughness (Ra) of 0.02 μm or less and a maximum height (Ry) of 0.25 μm or less; wherein the ceramic substrate is formed by subjecting a glass layer formed on a surface of the base ceramic substrate to heating-and-pressurizing treatment, thereby forming a glaze layer on the base ceramic substrate, and planarization polishing the surface of the glaze layer; wherein the planarization-polished surface of the glaze layer is adapted for forming the thin-film electronic components thereon; and wherein the glaze layer has a thickness of 10 to 100 μm and has no pores.