MICROPHONE MEMBRANE AND MICROPHONE COMPRISING THE SAME

摘要

The invention relates to a microphone membrane (M1) comprising two piezoelectric layers (PS1, PS2) with c-axes oriented in the same direction. A first electroconductive surface (E11) is formed in the central metal layer and subjected to a first electrical potential. The piezoelectric layers (PS1, PS2) are respectively arranged between the central metal layer (ML2) and an outer metal layer (ML1, ML3). In a preferred embodiment, the membrane (M1) has a largely symmetrical structure in terms of the layer sequence and the layer thickness thereof.