Patent ID: 7273762
Filing Date: 2007-09-25
Classification: B81B,B81C,G01P

Abstract:
1. A method for forming a microelectromechanical (MEM) device on a substrate including at least an active layer, and a sacrificial layer disposed at least partially therebetween, the method comprising the steps of: forming at least an anchor region and a suspension region in the active layer, the suspension region having formed therein at least a mass structure, a suspension spring, and a release bridge, the suspension spring coupled between the anchor region and the mass structure, the release bridge coupled to the suspension spring and to the mass structure; and removing at least a portion of the sacrificial layer to thereby release the mass structure, the release bridge, and the suspension spring from the substrate, wherein the release bridge is sized such that the mass structure and the suspension spring are released substantially simultaneously during sacrificial layer removal.