Patent ID: 6433401
Filing Date: 2002-08-13
Classification: B81B,B81C,G01P,H01G

Abstract:
A micromechanical device comprising:a device substrate having a first surface, a second surface, and a semiconductor layer; a handle substrate having a first surface and a second surface, the first surface of the device substrate bonded to the first surface of the handle substrate; at least a first trench formed in the device substrate, said at least first trench extending from the second surface of the device substrate through the device substrate towards the handle substrate; a dielectric within the first trenches; at least one cavity formed in at least one of said substrates and disposed below the second surface of the device substrate, said cavity enclosing at least a portion of said at least one first trench; at least a second trench formed in the second surface of the device substrate, the at least second trench defining at least one micromechanical device.