Miniature acoustic transducer

Details Miniature acoustic transducer Miniature acoustic transducer

2007-06-13

2011-12-20

Ensey, Brian (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Microphone capsule only

C381S175000

Reexamination Certificate

active

08081783

ABSTRACT:
A technique using a new diaphragm structure and support design is provided herein for microphones or structure designs for pressure sensing. The structure includes a set of capacitive structures. The capacitive structure has a combination of a diaphragm structure, a back plate structure and a surrounding micro-structure for fixing the diaphragm. After the diaphragm structure has deformed due to a pressure load, a gap between the back plate and the diaphragm is changed accordingly, and variation occurs in the capacitance value between the two parallel plates. By using the principle of the effect of capacitance value variation, the capacitive sensor causes the capacitance value to vary with the change in the sound, thus accomplishing the object of measuring.

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“Office Action of Taiwan counterpart application”, issued on Jan. 12, 2010, p. 1-p. 3.

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