Patent ID: 6571445
Filing Date: 2003-06-03
Classification: B06B,G01H,Y10T

Abstract:
A method of manufacturing a transducer comprising:depositing a first conductive layer on a substrate; etching the first conductive layer to form at least two first electrodes and a first interconnect electrically connecting the at least two first electrodes; depositing a first insulating film layer of insulator material on the etched first conductive layer; depositing a sacrificial layer over the first insulating film; etching the sacrificial layer to create at least two sacrificial portions, each in substantial alignment with and overlapping one of the two first electrodes; depositing a second insulating film layer of insulator material over the etched sacrificial layer; depositing a second conductive layer over the second insulating film layer; etching the second conductive layer to form at least two second electrodes that overlap and substantially align with the two first electrodes, and a second interconnect electrically connecting the two second electrodes, wherein the second interconnect does not overlap the first interconnect; and removing the sacrificial portions to form corresponding void areas.