Patent ID: 7110565
Filing Date: 2006-09-19
Classification: H04R,Y10T

Abstract:
1. An electroacoustic transducer, comprising: a case comprising a lid portion and a dish portion each having an inner wall, an outer wall and end edges connecting the inner wall and the outer wall; a diaphragm disposed in the case comprising a central diaphragm portion having a circumferential edge, the central diaphragm portion being provided on a film, such that along at least a part of the circumferential edge of the central diagram portion a free strip of film is present, the central diaphragm portion and the free strip of film being located substantially in the same plane; and means for converting between an electric signal and a vibration of the central diaphragm portion while the film of the diaphragm is connected to the case, wherein between the outer circumferential edge of the film and the inner wall of the case a capillary space is present, in which a polymer is provided as a connection between the outer circumferential edge of the film and the inner wall of the case, said polymer increasing resistance to deformation of said diaphragm when subjected to a sound.