Patent ID: 7075218
Filing Date: 2006-07-11
Classification: G01C,H03H,Y10T

Abstract:
1. A tuning fork type crystal component for an angular velocity sensor comprising: a tuning fork shaped crystal element having a pair of tuning fork arms extending from a tuning fork base portion where an X axis of a crystal axis (XYZ) is a widthwise direction, a Y axis is a lengthwise direction and a Z axis is a depthwise direction; and mutually electrically separated first and second sensor electrodes for angular velocity detection formed on at least one face among side faces of said tuning fork arms; wherein said tuning fork shaped crystal element is formed by a photo-etching technique, and said first and second sensor electrodes are formed on a +X face among the side faces of said tuning fork arms, and are arranged on both sides of a protrusion ridge line section formed in a lengthwise direction of said +X face due to crystallinity of said crystal.