发明申请
- 专利标题: MICROSPEAKER WITH PIEZOELECTRIC, METAL AND DIELECTRIC MEMBRANE
- 专利标题(中): 具有压电,金属和介电膜的微型扬声器
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申请号: US13306397申请日: 2011-11-29
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公开(公告)号: US20130136280A1公开(公告)日: 2013-05-30
- 发明人: Philip Jason Stephanou , David William Burns , Ravindra V. Shenoy
- 申请人: Philip Jason Stephanou , David William Burns , Ravindra V. Shenoy
- 申请人地址: US CA San Diego
- 专利权人: QUALCOMM MEMS TECHNOLOGIES, INC.
- 当前专利权人: QUALCOMM MEMS TECHNOLOGIES, INC.
- 当前专利权人地址: US CA San Diego
- 主分类号: H04R17/00
- IPC分类号: H04R17/00 ; H04R31/00
摘要:
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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