Patent ID: 6204086
Filing Date: 2001-03-20
Classification: B81B,B81C,G01L

Abstract:
A method for manufacturing a semiconductor device, the semiconductor device including a deformable membrane and at least one piezoresistor, the at least one piezoresistor providing a measure of a deformation of the deformable membrane, the method comprising the steps of:applying a masking layer to a silicon layer of a substrate;forming at least one opening having at least one edge by patterning the masking layer;introducing dopants for forming the at least one piezoresistor through the at least one opening into the silicon layer;controlling the forming of the at least one piezoresistor in at least one direction via the at least one edge of the at least one opening;joining the masking layer to a plate, the plate, before joining, being separate from the substrate;forming the deformable membrane by at least removing at least a portion of the substrate; anddefining at least one edge of the deformable membrane by the at least one edge of the at least one opening.