Patent ID: 6046067
Filing Date: 2000-04-04
Classification: B81B,B81C,G01P

Abstract:
A method for producing a micromechanical device having a movable element, comprising the steps of:forming a body having a carrier on which a first whole-area insulating layer is arranged and having a whole-area silicon layer arranged over said insulating layer;structuring the silicon layer with openings formed down to the first insulating layer, which openings surround a movable element to be produced;applying an insulating layer region, which extends over the openings and the movable element to be produced, and applying thereover a whole-area further layer;structuring the further layer with windows down to the insulating layer region above the movable element to be produced;selectively etching the insulating layer region and regions of the first insulating layer which are situated underneath region using the structured further layer as a mask, such that parts of the silicon layer are exposed and the movable element is completed; andapplying a covering layer over the further layer as a planar covering, thereby forming a closed cavity.