Patent ID: 8230740

Claim:
An angular speed sensor, comprising: a supporting substrate; a first oscillating portion and a second oscillating portion arranged to oscillate in a first direction and in a second direction perpendicular to the first direction, the first and the second oscillating portions being spaced from each other in the first direction; a pair of coupling beams extending in the first direction and spaced from each other in the second direction with the first and the second oscillating portions located therebetween, the coupling beams capable of producing standing wave oscillation; a plurality of fixing posts fixing the coupling beams to the supporting substrate; a first link portion serving as a bridge between the pair of coupling beams and connected to the first oscillating portion, the first link portion including two bridge beams spaced apart from each other in the first direction and each elongated in the second direction to be connected to the coupling beams, the two bridge beams being arranged to flank the first oscillating portion as a whole in the first direction; and a second link portion serving as a bridge between the pair of coupling beams and connected to the second oscillating portion, the second link portion including two bridge beams spaced apart from each other in the first direction and each elongated in the second direction to be connected to the coupling beams, the two bridge beams of the second link portion being arranged to flank the second oscillating portion as a whole in the first direction; wherein: the fixing posts are connected to the coupling beams at fixed points of the standing wave oscillation; and the bridge beams of the first and the second link portions each include a widened portion formed at an end thereof connected to the coupling beams, the widened portion being connected to the coupling beams at a fixed point of the standing wave oscillation of the coupling beams.