Patent ID: 6812620
Filing Date: 2004-11-02
Classification: H04R

Abstract:
A micromachined capacitive electrical component comprising:a frame, a plurality of discrete supports, a back plate secured to the frame by the plurality of discrete supports at a plurality of discrete locations and in a fixed relationship to the frame, the back plate having an electrically conductive back plate electrode, a diaphragm of an electrically insulating material secured along its periphery, in a fixed relationship to the frame and at a distance from the back plate, wherein the back plate and the diaphragm define an air gap therebetween, the diaphragm carrying an electrically conductive diaphragm electrode, the frame and the diaphragm electrode being electrically interconnected so as to have substantially the same electrical potential, and a layer of an electrically insulating material disposed between the back plate and the frame through the plurality of discrete supports at least at the discrete locations.