摘要 |
<p>To provide a downsized microphone unit in which a differential microphone is densely mounted thereon. The microphone unit has a cover portion 30 and a microphone substrate 10, in which a first substrate internal space 15 is communicated with a cover portion internal space 32 via a first substrate opening 11 and a cover portion opening 31, and is communicated with the outside via a second substrate opening 12, a second substrate internal space 16 is communicated with the cover portion internal space 32 via a third substrate opening 13 and a cover portion opening 31, and is communicated with the outside via a fourth substrate opening 14, a partition portion 20 covers a communication aperture between the first substrate opening 11 and the cover portion opening 31, and a diaphragm 22 covers at least a part of the communication aperture between the first substrate opening 11 and the cover portion opening 31.</p> |
申请人 |
FUNAI ELECTRIC CO., LTD.;FUNAI ELECTRIC ADVANCED APPLIED TECHNOLOGY RESEARCH INSTITUTE INC. |
发明人 |
TANAKA, FUMINORI;HORIBE, RYUSUKE;INODA, TAKESHI;TAKANO, RIKUO;SUGIYAMA, KIYOSHI;FUKUOKA, TOSHIMI;ONO, MASATOSHI |