ELECTROMECHANICAL CHANGE ELEMENT

• Main Authors: ZAITSU YOSHITAKA, KAWASAKI TAKEHIKO
• Format: Patent
• Language: English
• Published: 04.11.2010
• Subjects: DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; FOR PERFORMING MECHANICAL WORK IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICALVIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY; PERFORMING OPERATIONS; PUBLIC ADDRESS SYSTEMS; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TRANSPORTING

PROBLEM TO BE SOLVED: To solve such the problem that when the initial displacement of a membrane greatly varies in respective cells in an element, there is a need to reduce a bias voltage to be applied between electrodes, which lowers sensitivity. SOLUTION: The electromechanical conversion element includes an element having a plurality of cells each including a first electrode and a second electrode provided with a cavity being disposed between the first electrode and the second electrode. A groove is formed in a position at a predetermined distance from the cavity of the cell provided on the outermost periphery of the element. COPYRIGHT: (C)2011,JPO&INPIT