The microphone which possesses the microphone diaphragm and the microphone diaphragm

摘要

This invention, two piezoelectric layers which possess c axis which orientation is done (PS1 and PS2) the microphone diaphragm which it has (M1) regards identical direction. The aspect of 1st conductivity is formed by the intermediate metal inside layer, 1st electric potential is impressed on the aspect of this 1st conductivity. Piezoelectric layer (PS1 and SP2) intermediate metal layer (ML2) with outer part metal layer (ML1 and ML3) with it is arranged respectively between. Regarding profitable execution form the diaphragm (M1) it possesses sufficiently symmetrical structure in regard to the layer line and thickness.