Patent ID: 8968637
Filing Date: 2015-03-03
Classification: B28B,B32B,C04B

Abstract:
1. A method for the fabrication of dome shaped low temperature cofired ceramic (LTCC) substrates, the method comprising the steps of: preparing a plurality of prefired substrates of ceramic and glass based material each to include a central portion and a plurality of segments extending therefrom; placing a first prefired substrate on a first mandrel with an arcuate shaped outer surface; positioning the segments of the first prefired substrate on the first mandrel to abut one another; placing a second prefired substrate on top of the first prefired substrate to form a stack; positioning the segments of the second prefired substrate to abut one another; placing additional prefired substrates on top of the stack; removing the stack of prefired substrates from the first mandrel; placing the stack of prefired substrates on a second mandrel that is smaller in circumference than the first mandrel; and firing the stack of prefired substrates and the second mandrel.