Patent ID: 6379990
Filing Date: 2002-04-30
Classification: B81B,B81C,G01P

Abstract:
A method of fabricating a micromechanical semiconductor configuration, which comprises:forming an epitaxial layer sequence of individual crystalline layers on a semiconductor substrate, the epitaxial layer sequence including a support layer, a membrane layer, and a counter-support layer, and producing a doping profile with alternating or varied doping of the support layer, the membrane layer and the counter-support layer; forming a membrane in the epitaxial layer sequence by at least regionally wet-chemically etching the support layer and the counter-support layer with an etching agent selective towards the membrane layer, and thereby forming a cavity in the epitaxial layer sequence whereby an edge region of the membrane rests on a support formed by the support layer, and the membrane is covered with a covering layer supported on the counter-support layer.