Patent ID: 7378294
Filing Date: 2008-05-27
Classification: B81B,B81C,G06F,G06N,H01L

Abstract:
1. A method of making a microdevice having a hermetically sealed cavity, the method comprising the steps of: providing a substrate having a top side and a bottom side; forming a conductive trace on the top side of the substrate, the conductive trace having a first end and a second end; forming an isolation layer over at least a portion of the top side of the substrate and the conductive trace; forming a gap in the substrate; attaching a microstructure to the first end of the conductive trace so that at least a substantial portion of the microstructure is positioned above the gap; providing a silicon cap and a silicon island, the silicon cap being separated from the silicon island by an isolation trench; attaching the silicon cap to the isolation layer formed on the top side of the substrate such that the silicon cap houses the microstructure and forms the hermetically sealed cavity; and attaching the silicon island to the second end of the conductive trace.