Patent ID: 6137150
Filing Date: 2000-10-24
Classification: G01C,G01P

Abstract:
A semiconductor physical-quantity sensor, comprising:a semiconductor substrate;a movable member having an anchor portion which anchors said movable member to said semiconductor substrate, wherein said movable member is displaced by and detects a physical quantity acting from both a direction parallel to said semiconductor substrate and a direction non-parallel on relative to said semiconductor substrate on said movable member;an oxide film formed on said semiconductor substrate; anda fixed member including an anchor portion which anchors said fixed member to said semiconductor substrate by said oxide film, said fixed member extending above said semiconductor substrate and said oxide film to a height above a height of said movable member, and including a communication portion that extends outwardly at a height corresponding to a height of said movable member to facilitate communication between said movable member and said fixed member, said communication portion defining a gap across which an electrostatic force is generated by a voltage applied therebetween.