Abstract: The present invention relates to a bridge-edge-type high-resolution electromagnetic speaker, wherein a coil and a permanent magnet, which are a pair of magnetic circuits provided at upper and lower portions of a vibration module, are stacked vertically. It is possible to manufacture a high-resolution loudspeaker having a wide range of applicability from a small-sized earphone with a plug-in type to a portable TV and an automobile. And a damper of a diaphragm of a vibration module may be formed as a magnetic material damper and the coil is directly contacted without any space between the coils, it is possible to transmits the magnetic energy of the coil to the diaphragm without loss and contribute to the amplitude expansion of the diaphragm. As a result, efficiency is increased and the bass reproduction limit frequency is expanded.

Abstract: The present invention relates to an ultra slim high-resolution electromagnetic speaker with bridge-edge, wherein a pair of magnetic circuits stacked on the upper and lower sides of the vibration module and a permanent magnet are provided in a horizontal arrangement structure and a permanent magnet is disposed inside the coil, so that an ultra slim speaker may be obtained and the inner magnetic field of the permanent magnet whose distance between the opposite poles of the permanent magnet is approximated by the limiter may be used as the driving bias of the diaphragm to reduce the magnetoresistance and increase the efficiency.