Transducer with piezoelectric, conductive and dielectric membrane
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United States of America Patent
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Aug 4, 2020
Grant Date -
May 4, 2017
app pub date -
Jan 12, 2017
filing date -
Nov 29, 2011
priority date (Note) -
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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.
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