Patent ID: 6323049
Filing Date: 2001-11-27
Classification: H04R

Abstract:
A method for manufacturing a condenser microphone having a case, a diaphragm ring, a diaphragm, a spacer, a supporter, a back-pole plate, a connection ring, an FET (Field Effect Transistor) chip and a printed circuit board, said method comprising, the steps of:cutting out an FET chip formed on a wafer therefrom;fixing the gate Surface on said FET chip to the corresponding mounting region of said gate on a printed circuit board patterned with electric conductors using a conductive material, and curing thereof;bonding the portions of the drain and the source on said FET chip to each corresponding region of said drain and source on said circuit board using metal wires;molding said FET chip fixed on said printed circuit board, and curing thereof; andassembling said diaphragm ring, diaphragm, spacer, supporter, backpole plate, connection ring, and printed circuit board fixed with said FET chip into a case in that order.