Patent ID: 9596528
Date: 2017-03-14
CPC Classifications: B06B,H01L,H04R

Claim:
1. A capacitive micromachined ultrasonic transducer comprising: a device substrate comprising (i) a first trench confining a plurality of first parts corresponding to a plurality of elements, and (ii) a second trench confining a second part separated from the plurality of first parts; a supporting unit provided on the device substrate for confining a plurality of cavities corresponding to each of the plurality of elements; a membrane provided on the supporting unit to cover the plurality of cavities; an upper electrode provided on the membrane and electrically connected to the second part in the second trench of the device substrate through a via hole passing through the membrane and the supporting unit; and a through-silicon via (TSV) substrate provided on a lower surface of the device substrate, the TSV substrate comprising a plurality of first via metals connected to the plurality of first parts in the device substrate and a second via metal connected to the second part in the device substrate.