Patent ID: 8340328

Claim:
An acoustics transducer, comprising: a support substrate having an upper surface and a lower surface, the upper surface comprising a first portion and a second portion surrounding the first portion, and a linking portion connecting the first portion and the second portion of the upper surface of the support substrate; a first recess extending from the upper surface towards the lower surface, wherein the first recess is between the first portion and the second portion; a vibratable membrane disposed directly on the first recess, the vibratable membrane comprising a fixed portion and a suspended portion, wherein: the fixed portion is fixed on the support substrate, an edge of the suspended portion extends substantially along with an edge of an opening of the first recess, an inner gap is between the suspended portion and the first portion of the upper surface, and an outer gap is between the suspended portion and the second portion of the upper surface; and a back plate disposed overlying the support substrate and opposite to the vibratable membrane.