Patent ID: 8065914
Filing Date: 2011-11-29
Classification: G01C

Abstract:
1. A vibration gyro made of a single crystal piezoelectric material, comprising: a base; a plurality of resonating arms extending from the base; an excitation electrode formed on a surface of at least one of the plurality of resonating arms so as to vibrate at least the one of the plurality of resonating arms; a piezoelectric element detecting a vibration component due to a Coriolis force acting perpendicularly to a vibrating direction of the plurality of resonating arms being vibrated by the excitation electrode, the Coriolis force is generated when the vibration gyro rotate at an angular velocity, the piezoelectric element being mounted on a surface of both the base and at least one of the plurality of resonating arms; a first metal film formed on a surface of both the base and at least one of the plurality of resonating arms; and a second metal film formed on a surface of the piezoelectric element, wherein at least one metal film surface of the first metal film and the second metal film is formed to be a concave and convex surface so that the first metal film and the second metal film are directly bonded to each other.