Patent ID: 8409900
Filing Date: 2013-04-02
Classification: B81B,B81C,G01H,H02N,H04R

Abstract:
1. A method of fabricating a MEMS composite transducer, the method comprising: providing a substrate having a first surface and a second surface opposite the first surface; depositing a transducing material over the first surface of the substrate; patterning the transducing material by retaining transducing material in a first region and removing transducing material in a second region; depositing a polymer layer over the first and second regions; patterning the polymer layer by retaining polymer in a third region and removing polymer in a fourth region, a first portion of the third region being coincident with a portion of the first region, and a second portion of the third region being coincident with a portion of the second region; and etching a cavity from the second surface to the first surface of the substrate, wherein an outer boundary of the cavity at the first surface of the substrate intersects the first region where transducing material is retained, so that a first portion of the transducing material is anchored to the first surface of the substrate and a second portion of the transducing material extends over at least a portion of the cavity.