Patent ID: 9128114
Filing Date: 2015-09-08
Classification: G01P

Abstract:
1. A capacitive sensor device, the device comprising: a silicon-on-insulator (SOI) stack including a substrate having an upper portion arranged for providing support thereon along a plane, an insulator layer on the upper portion, and a silicon layer on the insulator layer and separated from the substrate by the insulator layer; a first electrode including a first portion of the silicon layer fixedly secured to the substrate via a first portion of the insulator layer; a second electrode including a second portion of the silicon layer fixedly secured to the substrate via a second portion of the insulator layer; and a movable element including a third portion of the silicon layer electrically decoupled from the substrate and including a first outer conductive portion and a second outer conductive portion laterally offset, relative to the upper portion of the plane, respectively from the first electrode and the second electrode, wherein a portion of the insulator layer between the movable element and the substrate is removed and the movable element is configured and arranged to wherein the movable element is further configured and arranged to move, between the first electrode and the second electrode in the moving direction, in response to a range of accelerations starting at 2 g and extending up to 10 g, movement of the movable element being unresponsive to accelerations outside of the range of accelerations, and a first distance between the first electrode and the movable element corresponds to the position of the movable element.