Invention Grant
- Patent Title: Microspeaker with piezoelectric, metal and dielectric membrane
- Patent Title (中): 带压电,金属和介电膜的微型扬声器
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Application No.: US13306397Application Date: 2011-11-29
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Publication No.: US08811636B2Publication Date: 2014-08-19
- Inventor: Philip Jason Stephanou , David William Burns , Ravindra V. Shenoy
- Applicant: Philip Jason Stephanou , David William Burns , Ravindra V. Shenoy
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM MEMS Technologies, Inc.
- Current Assignee: QUALCOMM MEMS Technologies, Inc.
- Current Assignee Address: US CA San Diego
- Agency: Weaver Austin Villeneuve & Sampson LLP
- Main IPC: H04R25/00
- IPC: H04R25/00

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
- US20130136280A1 MICROSPEAKER WITH PIEZOELECTRIC, METAL AND DIELECTRIC MEMBRANE Public/Granted day:2013-05-30
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