Patent ID: 8325950
Filing Date: 2012-12-04
Classification: H04R,Y10T

Abstract:
1. A silicon condenser microphone, comprising: a silicon base; a back plate located above the base and a plurality of perforations; a diaphragm opposed from the back plate, the diaphragm comprising an inner vibrating part and an outer part surrounding the inner part; a capacitor formed by the back plate and the diaphragm; a gap formed between the inner vibrating part and the outer part; wherein the inner vibrating part is provided with a first electrode pad electrically connected to a bias voltage, and the outer part is provided with a second electrode pad connected to the ground; and wherein the outer part of the diaphragm, while continuously connected, defines a plurality of recesses, and the inner vibrating part correspondingly defines a plurality of supporting arms partially accommodated in the recesses.