MAGNESIUM DIAPHRAGM WITH BUILT-IN BOBBIN AND METHOD FOR SAME

摘要

The present invention relates to a thin magnesium diaphragm with a built-in bobbin and a method for manufacturing the same in a simple fashion. The magnesium diaphragm of the present invention includes a semi-spherical dome made of a magnesium material, and a bobbin made of a magnesium material, formed integrally with the semi-spherical dome and extended into a cylindrical shape from an edge of the semi-spherical dome. The semi-spherical dome has a first thickness, and the bobbin has a second thickness thicker than the first thickness.