Effects of Silver‐Paste Formulation on Camber Development during the Cofiring of a Silver‐Based, Low‐Temperature‐Cofired Ceramic Package

Abstract

The effects of silver‐paste formulation on camber development during the cofiring of a two‐layered structure of a silver‐based, low‐temperature‐cofired ceramic (LTCC) system have been investigated. The densification kinetics and mechanism of the silver film become more similar to that of LTCC as the amount of LTCC powder in the silver paste increases, which results in a smaller camber during cofiring. By using the densification results of silver film and LTCC, camber development during cofiring can be mathematically described by using viscous analysis, which agrees well with the experimental observations.