Patent ID: 8375560
Filing Date: 2013-02-19
Classification: H04R,Y10T

Abstract:
1. A method for manufacturing a condenser microphone, comprising: (A) forming a diaphragm module using microelectromechanical system (MEMS) techniques, the diaphragm module including a diaphragm that is deformable by energy of sound waves, and a diaphragm spacer that extends from one side of the diaphragm and controls a tension of the diaphragm; (B) providing a backplate with vent holes, aligning the vent holes of the backplate with a central region of the diaphragm, and connecting the backplate to the diaphragm spacer to construct a transducer unit, wherein the diaphragm spacer, the diaphragm and the backplate cooperate to form an air chamber in fluid communication with an environment external to the condenser microphone, and wherein the backplate and the diaphragm cooperate to form a condenser; and (C) enclosing the transducer unit in a housing that includes a shell and a circuit board to thereby form the condenser microphone, the housing permitting the sound waves to enter thereinto and reach the transducer unit, wherein the diaphragm of the diaphragm module made in step (A) includes a vibration layer and a conductive layer formed on the vibration layer, and step (B) further includes adhering a conductive shell spacer to another side of the diaphragm opposite to the diaphragm spacer for forming a ground connection between the diaphragm and the circuit board via the conductive layer, the shell spacer and the shell.