Sound apparatus and vehicular apparatus including the same
US-2024422459-A1 · Dec 19, 2024 · US
Piezoelectric micro speaker having piston diaphragm and method of manufacturing the same
US8958595B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8958595-B2 |
| Application number | US-69693510-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 29, 2010 |
| Priority date | Aug 31, 2009 |
| Publication date | Feb 17, 2015 |
| Grant date | Feb 17, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
Provided are a piezoelectric micro speaker having a piston diaphragm and a method of manufacturing the piezoelectric micro speaker. The piezoelectric micro speaker includes: a substrate having a cavity formed therein; a vibrating membrane that is disposed on the substrate and covers at least a center part of the cavity; a piezoelectric actuator disposed on the vibrating membrane so as to vibrate the vibrating membrane; and a piston diaphragm that is disposed in the cavity and performs piston motion by vibration of the vibrating membrane. When the vibrating membrane vibrates by the piezoelectric actuator, the piston diaphragm, which is connected to the vibrating membrane through a piston bar, performs a piston motion in the cavity.
First claim
Opening claim text (preview).
What is claimed is: 1. A micro speaker comprising: a substrate having a cavity formed therethrough in a thickness direction of the substrate; a vibrating membrane that is disposed on the substrate and covers at least a center part of the cavity; a piezoelectric actuator disposed on the vibrating membrane, wherein a movement of the piezoelectric actuator vibrates the vibrating membrane; a piston diaphragm that is disposed in the cavity and is connected to the vibrating membra…
Assignees
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Classifications
Electricity · mapped topic
- H04R17/00Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8958595B2 cover?
- Provided are a piezoelectric micro speaker having a piston diaphragm and a method of manufacturing the piezoelectric micro speaker. The piezoelectric micro speaker includes: a substrate having a cavity formed therein; a vibrating membrane that is disposed on the substrate and covers at least a center part of the cavity; a piezoelectric actuator disposed on the vibrating membrane so as to vibrat…
- Who is the assignee on this patent?
- Hwang Jun-Sik, Kim Dong-Kyun, Chung Seok-Whan, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification H04R17/00. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 17 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).