Microphone Unit, Method of Manufacturing Microphone Unit, Electronic Apparatus, Substrate for Microphone Unit and Method of Manufacturing Substrate for Microphone Unit
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United States of America Patent
Stats
-
N/A
Issued Date -
Apr 18, 2013
app pub date -
Oct 11, 2012
filing date -
Oct 12, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
This microphone unit includes a vibrating portion converting a sound to an electric signal, a substrate having a first surface where the vibrating portion is set and a second surface opposite to the first surface and including a hollow portion transmitting a sound therein, and a coating layer formed on an inner surface of the hollow portion of the substrate. The substrate further includes a first substrate sound hole portion provided on the first surface for causing the hollow portion and the vibrating portion to communicate with each other, a second substrate sound hole portion provided on the first surface for causing the hollow portion and the exterior to communicate with each other, and a coating liquid draining hole portion provided on the second surface for causing the hollow portion and the exterior to communicate with each other.
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Cited Art Landscape
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