| 摘要 |
PROBLEM TO BE SOLVED: To provide a lower cost electret capacitor microphone(ECM) by improving productivity of the ECM by building a conductor on an insulator. SOLUTION: The electret capacitor microphone comprises an electrode plate 101 for forming a film made of an electret material, a diaphragm 102 disposed oppositely to the film side of the plate 101, a circuit board 107 disposed to an opposite side to the diaphragm 102 to the plate 101, an electronic component 120 disposed on the board 107 between the board 107 and the diaphragm 102, the insulator 108 disposed at the outside from the component 120 between the board 107 and the diaphragm 102, and a gate 109 for electrically connecting the plate 101 to the board 107. In this case, the gate 109 has a bent part 109a disposed at an inner side of the insulator 108 and a cut part 109b cut at the outer side of the insulator 108. |
