Patent ID: 7996969
Filing Date: 2011-08-16
Classification: H01G,H05K,Y10T

Abstract:
1. A method for adjusting a capacitance value of a built-in capacitor of a multilayer ceramic substrate, the method comprising the steps of: forming the multilayer ceramic substrate to include a ceramic laminate including a plurality of ceramic layers laminated to each other and first and second capacitor electrodes arranged to face each other with one of the plurality of ceramic layers interposed therebetween so as to define the built-in capacitor; and performing laser trimming of the first capacitor electrode; wherein the one of the plurality of ceramic layers interposed between the first and second electrodes is a TiO the TiO (A) about 10 percent to about 35 percent by volume of a BaO—TiO (B) about 5 percent to about 42 percent by volume of an alumina ceramic; and (C) about 50 percent to about 79 percent by volume of a borosilicate glass which includes about 4 percent to about 17.5 percent by weight of B the TiO