Low noise electret microphone
US-2015358709-A1 · Dec 10, 2015 · US
Condenser type electroacoustic transducer
US2016165356A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016165356-A1 |
| Application number | US-201514956438-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 2, 2015 |
| Priority date | Dec 4, 2014 |
| Publication date | Jun 9, 2016 |
| Grant date | — |
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- Title
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Abstract
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A condenser type electroacoustic transducer includes a diaphragm, a fixed electrode having a surface facing the diaphragm, and a dielectric disposed in a partial region on the surface of the fixed electrode.
First claim
Opening claim text (preview).
What is claimed is: 1 . A condenser type electroacoustic transducer comprising: a diaphragm; a fixed electrode having a surface facing the diaphragm; at least one dielectric disposed in a partial region on the surface of the fixed electrode; and an electret layer disposed between the diaphragm and the fixed electrode. 2 . The condenser type electroacoustic transducer according to claim 1 , wherein the dielectric is disposed between the electret layer and the fixed electrode. 3 . The condenser type electroacoustic transducer according to claim 1 , wherein the dielectric is disposed at a position homologous to an edge portion of the diaphragm. 4 . The condenser type electroacoustic transducer according to claim 1 , wherein the dielectric is disposed more inward than a position homologous to an edge portion of the diaphragm. 5 . The condenser type electroacoustic transducer according to claim 1 , wherein the dielectric comprises a plurality of dielectrics disposed symmetrically about the center of the diaphragm on an edge portion of the diaphragm. 6 . The condenser type electroacoustic transducer according to claim 1 , wherein the dielectric comprises a plurality of dielectrics disposed symmetrically about the center of the diaphragm more inward than an edge portion of the diaphragm. 7 . The condenser type electroacoustic transducer according to claim 1 , wherein the diaphragm has a circular shape. 8 . A condenser type electroacoustic transducer comprising: a diaphragm; a fixed electrode having a surface facing the diaphragm; an electret layer disposed between the diaphragm and the fixed electrode; and at least one dielectric disposed in a partial region between the electret layer and the fixed electrode on the surface of the fixed electrode. 9 . The condenser type electroacoustic transducer according to claim 8 , wherein the dielectric is disposed in an edge portion of the diaphragm. 10 . The condenser type electroacoustic transducer according to claim 8 , wherein the dielectric is disposed more inward than an edge portion of the diaphragm. 11 . The condenser type electroacoustic transducer according to claim 8 , wherein the dielectric comprises a plurality of dielectrics disposed symmetrically about the center of the diaphragm on an edge portion of the diaphragm. 12 . The condenser type electroacoustic transducer according to claim 8 , wherein the dielectric comprises a plurality of dielectrics disposed symmetrically about the center of the diaphragm more inward than an edge portion of the diaphragm. 13 . The condenser type electroacoustic transducer according to claim 8 , wherein the diaphragm has a circular shape.
Assignees
Inventors
Classifications
Mems transducers or their use · CPC title
for diaphragms or their outer suspension · CPC title
using solid state devices (solid state devices per se H10) · CPC title
Microphones (H04R19/01 takes precedence) · CPC title
using semiconductor materials · CPC title
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Frequently asked questions
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- What does patent US2016165356A1 cover?
- A condenser type electroacoustic transducer includes a diaphragm, a fixed electrode having a surface facing the diaphragm, and a dielectric disposed in a partial region on the surface of the fixed electrode.
- Who is the assignee on this patent?
- Ikeda Tatsuya, Akino Hiroshi, Audio Technica Kk
- What technology area does this patent fall under?
- Primary CPC classification H04R19/016. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jun 09 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).