Patent ID: 8796789
Filing Date: 2014-08-05
Classification: B81B,B81C,G01C,G01P,H01L

Abstract:
1. A physical quantity sensor comprising: an electroconductive first base member; an electroconductive second base member; an electroconductive functional member including: a detection portion configured to detect displacement of the movable portion; a first insulation layer bonding the frame portion and the first base member to each other; a first metal layer formed on a facing surface of the functional member facing the second base member, the first metal layer including a second insulation layer formed on a facing surface of the second base member facing the functional member; and a second metal layer formed on a surface of the second insulation layer, the second metal layer including wherein a gap between the frame portion and the second base member is sealed by eutectically bonding the first sealing layer and the second sealing layer to each other, and wherein the first contact layer and the second contact layer, respectively separated from the first sealing layer and the second sealing layer, are electrically connected to each other, and thereby the first base member, the second base member, and the frame portion are made to have the same potential.