Patent ID: 8389349

Claim:
A method of manufacturing a capacitive transducer comprising the steps of: applying a first etching mask on a layer to define the position of one of a movable set of fingers and a fixed set of fingers, the layer being carried by a substrate; applying a second etching mask to define the movable set of fingers, the fixed set of fingers, a body, and springs, the body being connected to the movable set of fingers and the springs, the movable set of fingers being interdigitated with the fixed set of fingers; etching the layer and the first etching mask using the second etching mask; removing the second etching mask; etching the layer using the etched first etching mask such that one of the movable set of fingers and the fixed set of fingers is shorter than the other of the movable set of fingers and the fixed set of fingers; and releasing the body, the springs, and the movable set of fingers using etching, such that, upon applying a force to the body, the body moves parallel to the substrate.