Invention Application
- Patent Title: TRANSDUCER WITH PIEZOELECTRIC, CONDUCTIVE AND DIELECTRIC MEMBRANE
- Patent Title (中): 具有压电,导电和电介质膜的传感器
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Application No.: US14336744Application Date: 2014-07-21
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Publication No.: US20140328504A1Publication Date: 2014-11-06
- Inventor: Philip Jason Stephanou , David William Burns , Ravindra V. Shenoy
- Applicant: QUALCOMM MEMS Technologies, Inc.
- Main IPC: H04R17/00
- IPC: H04R17/00

Abstract:
This disclosure provides systems, methods and apparatus for microspeaker devices. In one aspect, a microspeaker element may include a deformable dielectric membrane that spans a speaker cavity. The deformable dielectric membrane can include a piezoactuator and a dielectric layer. Upon application of a driving signal to the piezoactuator, the dielectric layer can deflect, producing sound. In some implementations, an array of microspeaker elements can be encapsulated between a glass substrate and a cover glass. Sound generated by the microspeaker elements can be emitted through a speaker grill formed in the cover glass.
Public/Granted literature
- US10003888B2 Transducer with piezoelectric, conductive and dielectric membrane Public/Granted day:2018-06-19
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