Patent ID: 7989263
Filing Date: 2011-08-02
Classification: B81B,B81C

Abstract:
1. A method for manufacturing at least one micromechanical chip, comprising: applying a sacrificial layer to a front side of a substrate; applying an epitaxy layer to the sacrificial layer, a bottom side of the epitaxy layer contacting the sacrificial layer; etching at least one contact trench from a top side of the epitaxy layer through the epitaxy layer; producing an insulating layer on the walls of the at least one contact trench; producing a contact layer in the contact trench, wherein the contact layer provides a conductive connection from a front side of the micromechanical chip to the sacrificial layer; etching separation trenches from the top side of the epitaxy layer through the epitaxy layer to the sacrificial layer; and removing the sacrificial layer.