Patent ID: 8491834
Filing Date: 2013-07-23
Classification: B32B,C04B,H05K

Abstract:
1. A method for manufacturing a laminate type ceramic electronic component including a thick film resistor formed on one principal surface of a multilayer ceramic substrate including a plurality of ceramic layers stacked on each other, and an overcoat layer formed on the thick film resistor, the method comprising the steps of: preparing an unfired composite laminate with an unfired thick film resistor formed on one principal surface of an unfired ceramic laminate including a plurality of unfired ceramic layers stacked on each other, and an unfired overcoat layer formed on the unfired thick film resistor; and subsequently firing the unfired composite laminate so that the unfired ceramic laminate, the unfired thick film resistor and the unfired overcoat layer are integrally sintered; wherein the unfired ceramic layers are made of a glass ceramic material containing glass and a ceramic; the unfired overcoat layer is made of a glass ceramic material including a ceramic and glass with substantially the same constituents and compositional ratio as those of the glass contained in the unfired ceramic layers; and the glass ceramic material constituting the unfired ceramic layers and the glass ceramic material constituting the unfired overcoat layer are adjusted so that a ratio of a crystalline phase with a smaller coefficient of thermal expansion than a coefficient of thermal expansion of the fired ceramic layers is higher in the overcoat layer than in the ceramic layers.