Integrated capacitive transducer

The invention relates to an integrated capacitive transducer (1) comprising: - a membrane including a movable part (4) equipped with an electrode, - a fixed plate (6) including a counter-electrode (8), - a structure (10) for supporting the electrode and the counter-electrode, the said fixed plate (6...

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Bibliographic Details
Main Authors MORET, JEAN-MARC, BERGQVIST, JOHAN WILHELM
Format Patent
LanguageEnglish
French
German
Published 08.04.1998
Edition6
Subjects
DEAF-AID SETS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS
PUBLIC ADDRESS SYSTEMS
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Summary:The invention relates to an integrated capacitive transducer (1) comprising: - a membrane including a movable part (4) equipped with an electrode, - a fixed plate (6) including a counter-electrode (8), - a structure (10) for supporting the electrode and the counter-electrode, the said fixed plate (6) further including an electret (30) which extends opposite the said movable part (4) and is separated from the said membrane by an open space (16), the said transducer being characterised in that the said electret (30) includes a first electrically conducting layer (32) embedded in an insulating material (34, 36). The invention applies particularly to hearing aids.
Bibliography:Application Number: EP19930113955