Patent ID: 8023670

Claim:
A condenser microphone having a reduced stray capacitance, the condenser microphone comprising: a case having an opened surface and formed of a conductive material, wherein an end portion of the case is bent during curling to closely attach to a printed circuit board (PCB); a diaphragm mounted inside the case, the diaphragm for being vibrated by an external sound pressure; a spacer; a backplate facing the diaphragm with a predetermined distance set by the spacer; a first base made of an insulating ring to electrically insulate the backplate from the case; a second base electrically connected to the backplate by disposing a conductive layer on a portion of a ring formed of an insulating material; and the PCB having one surface on which a circuit component and a conductive pattern for connecting the second base are disposed and another surface on which a conductive pattern for connecting the bent end portion of the case and a connection terminal for connecting an external circuit are disposed.