公开(公告)号：US11711067B2

公开(公告)日：2023-07-25

申请号：US16794099

申请日：2020-02-18

Applicant: InvenSense, Inc.

Inventor： Stefon Shelton ,  Andre Guedes ,  Richard Przybyla ,  Meng-Hsiung Kiang ,  David Horsley

IPC: H03H9/17 ,  B06B1/06 ,  H04R17/00 ,  H10N30/853 ,  H10N30/20 ,  H03H9/02 ,  H03H9/15

CPC classification number: H03H9/174 ,  B06B1/0603 ,  H03H9/02244 ,  H03H9/178 ,  H04R17/00 ,  H10N30/2047 ,  H10N30/853 ,  H10N30/8542 ,  H10N30/8554 ,  H03H2009/155

Abstract: A transducer includes first and second piezoelectric layers made of corresponding different first and second piezoelectric materials and three or more electrodes, implemented in two or more conductive electrode layers. The first piezoelectric layer is sandwiched between a first pair of electrodes and the second piezoelectric layer is sandwiched between a second pair of electrodes. The first and second pairs of electrodes contain no more than one electrode that is common to both pairs.