Patent ID: 6326229
Filing Date: 2001-12-04
Classification: G01N

Abstract:
A process for manufacturing integrated semiconductor devices comprising chemoresistive gas microsensors, the process comprising:forming a sacrificial region above a semiconductor material body, wherein said sacrificial region is a first metallic layer of an electrically conductive metallic material;selectively removing portions of said first metallic layer to delimit said sacrificial region as well as contact regions that are electrically and physically isolated from said sacrificial region;forming a heater element above said sacrificial region and electrically and physically separated from said sacrificial region;forming a gas sensitive element above said heater element and electrically and physically separated from said heater element;forming, laterally with respect to said heater element and to said gas sensitive element, openings extending as far as said sacrificial region; andremoving said sacrificial region through said openings.