MEMS microphone device and method for making same
US8524519B2 · kind B2 · utility
7Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2011 |
| Grant date | Sep 3, 2013 |
| Priority date | — |
| Expiry date | Feb 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R19/005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a MEMS microphone device and its manufacturing method. The MEMS microphone device includes: a substrate including a first cavity; a MEMS device region above the substrate, wherein the MEMS device region includes a metal layer, a via layer, an insulating material region and a second cavity; a mask layer above the MEMS device region; a first lid having at least one opening communicating with the second cavity, the first lid being fixed above the mask layer; and a second lid fixed under the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.