Patent ID: 8460961
Filing Date: 2013-06-11
Classification: C23C,G01L,H01L

Abstract:
1. A method for forming a transducer comprising the steps of: providing a semiconductor-on-insulator wafer including first and second semiconductor layers separated by an electrically insulating layer, wherein said first layer is formed or provided by hydrogen ion delamination of a starting wafer; doping said first layer to form a piezoresistive film; etching said piezoresistive film to form at least one piezoresistor; depositing or growing a metallization layer on said semiconductor-on-insulator wafer, said metallization layer including an electrical connection portion that is located on or is electrically coupled to said at least one piezoresistor; removing at least part of said second semiconductor layer to form a diaphragm, with said at least part of said at least one piezoresistor being located on said diaphragm; and joining said semiconductor-on-insulator wafer to a package by melting a high temperature braze material or a glass frit material.