Patent Number: 7,826,196

Title: Ceramic laminated device and method for manufacturing same

Abstract: The present invention relates to a ceramic laminated device including a dielectric ceramic and an Ag electrode. In a dielectric ceramic that can be sintered at low temperatures and has a high dielectric constant and Q value, reactivity between the ceramic and Ag during sintering is suppressed low and segregation of specific elements in the proximity of the electrode is controlled. Thus, a filter having a high Q value and low loss is produced stably. For this purpose, in a ceramic laminated body including at least a ceramic and a Si-containing glass, a ratio of A/B, i.e. a ratio of a Si element concentration (A) within a range at a distance of 5 .mu.m or smaller from the Ag electrode to a Si element concentration (B) within a range at a distance larger than 5 .mu.m from the Ag electrode, is set equal to or smaller than 2.

Inventors: Saito; Ryuichi (Osaka, JP), Shigeno; Koichi (Osaka, JP), Kagata; Hiroshi (Osaka, JP)

Assignee: Panasonic Corporation

International Classification: H01G 4/06 (20060101); H01G 4/005 (20060101)

Expiration Date: 2019-11-02 0:00:00