Patent ID: 6088463
Filing Date: 2000-07-11
Classification: H04R

Abstract:
A solid state silicon-based condenser microphone comprising a silicon transducer chip (1) including a backplate (13) and a diaphragm (12) arranged substantially parallel to each other, thereby forming an electrical capacitor, the diaphragm (12) being movable relative to the backplate (13) in response to incident sound, an integrated electronic circuit chip (3) electrically coupled to the transducer chip (1), an intermediate layer (2) fixing the transducer chip (1) to the integrated electronic circuit chip (3) in a spaced relationship, with the transducer chip (1) on a first side of the intermediate layer (2) and the integrated electronic circuit chip (3) on a second side of the intermediate layer (2) opposite the first side, the intermediate layer (2) having a first through going opening (4, 10) between its first side and its second side giving access of sound to the diaphragm.