Patent ID: 6387725
Filing Date: 2002-05-14
Classification: G01C,G01P,H01L

Abstract:
A method for production of an integrated angular speed sensor device, comprising:forming a sacrificial region on a substrate of semiconductor material; growing a pseudo-epitaxial layer including a polycrystalline epitaxial region in contact with the sacrificial region and a monocrystalline epitaxial region in contact with the substrate; forming electronic elements in the monocrystalline epitaxial region; removing selective portions of the polycrystalline epitaxial region thereby forming excitation electrodes that are intercalated with fixed excitation electrodes that extend in a first direction of extension; forming mobile detection electrodes that are intercalated with fixed detection electrodes that extend in a second direction of extension which is substantially perpendicular to the first direction; and forming a trench separating from one another the mobile and fixed excitation and detection electrodes; and removing the sacrificial region through the trench.