Patent ID: 8410659
Filing Date: 2013-04-02
Classification: B06B,Y10T

Abstract:
1. An electromechanical transducer comprising: a vibration membrane provided with a first electrode; a substrate provided with a second electrode; and a support member adapted to support said vibration membrane in such a manner that a gap is formed between said vibration membrane and said substrate, with the first and second electrodes being arranged in opposition to each other; wherein a part of said vibration membrane and a part of said substrate are in contact with each other at a contact region, and another region of said vibration membrane other than the contact region is able to vibrate; a first region is provided within the contact region, with at least one of the first electrode and second electrode not formed in the first region; and a plurality of protrusions formed within the gap and on at least one of said vibration member and said support member, wherein the contact region is surrounded by the plurality of protrusions, the protrusions are not formed in a central part of the vibration membrane, and the central part of the vibration membrane and the substrate are in contact with each other.