Patent ID: 6406933
Filing Date: 2002-06-18
Classification: G01L,G01P

Abstract:
A production method for a micromechanical component having a membrane layer, at least part of which is arranged above a cavity, the method which comprises:in a first step, applying a sacrificial layer to an upper face of a substrate; in a second step, applying an auxiliary layer composed of a material with respect to which the sacrificial layer can be selectively etched to the sacrificial layer; in a third step, forming openings in the auxiliary layer; in a fourth step, etching channels in the sacrificial layer via the openings in the auxiliary layer; in a fifth step, applying a planarization layer and closing the openings; in a sixth step, applying a membrane layer; in a seventh step, forming etching openings in an edge region of the membrane layer; and in an eighth step, removing the sacrificial layer, the auxiliary layer, and the planarization layer in a region of a cavity to be produced, via the etching openings and the etching channels produced in the fourth step.