Patent ID: 7698793

Claim:
A method of producing an electret condenser microphone, the method comprising: a first step of forming an adhesive-backed fluorine-containing resin film by stacking an adhesive on a film-shaped fluorine-containing resin material, and then, processing the adhesive-backed fluorine-containing resin film to a shape of a backplate; a second step of stacking the adhesive-backed fluorine-containing resin film on the backplate made of an electrically conductive film and provided on a backplate substrate, the backplate with the adhesive interposed between the backplate and the fluorine-containing resin film; a third step of thermo-setting the adhesive to firmly secure the fluorine-containing resin film to the backplate of the backplate substrate; and a fourth step of implanting electric charges into the fluorine-containing resin film firmly secured onto the backplate.