Patent ID: 6209394
Filing Date: 2001-04-03
Classification: G01C,G01P,H01L

Abstract:
An integrated angular speed sensor device, comprising a mobile structure anchored to a semiconductor material body and having first mobile excitation electrodes which are intercalated with first fixed excitation electrodes, said first mobile and first fixed excitation electrodes having a first direction of extension, and second mobile detection electrodes which are intercalated with second fixed detection electrodes, said second mobile and second fixed detection electrodes having a second direction of extension which is substantially perpendicular to said first direction, wherein said mobile structure comprises a first and a second mobile mass of quadrangular shape, said first and second mobile masses being separated from one another by an anchorage region, each of the first and second mobile masses having a first side which faces said anchorage region, a second side which is parallel to said first side, and a third and a fourth side which are parallel to one another and perpendicular to said first and second sides; the speed sensor device further comprising fixed first and second anchor sections positioned on opposite sides of the mobile structure; and first and second spring elements attached to and extending between the anchor sections in the anchorage region, the first spring element being attached to the first side of the first mobile mass and the second spring element being attached to the first side of the second mobile mass.