Patent ID: 6915693

Claim:
A MEMS (micro electro mechanical system) gyroscope comprising: a first mass which moves in relation to a substrate in a vertical direction of the substrate; a driving electrode disposed on a same surface with the first mass on the substrate, the driving electrode being operative to drive the first mass in the vertical direction; a second mass which moves in relation to the substrate in a horizontal direction that is parallel to the surface, the second mass being operative to be moved by a Coriolis force generated by an angular velocity applied while the first mass is being vibrated by the driving electrode; a sensing electrode which measures a displacement in the horizontal direction of the second mass; at least one first spring to fix the first mass and the second mass to each other for the first mass to be able to move in relation to the second mass in the vertical direction and be fixed in relation to the horizontal direction; and at least one second spring to fix the second mass on the substrate for the second mass to be able to move in relation to the substrate in the horizontal direction.