Patent ID: 9399573
Filing Date: 2016-07-26
CPC Classification: B81B,B81C,H01L

Claim Text:
1. A method for manufacturing an MEMS structure with a stack of material thicknesses, comprising: providing a stack of a substrate, a first etch-stop layer, a first semiconductor layer, a second etch-stop layer and a second semiconductor layer which are arranged one above the other in the order mentioned; implementing a spring-and-mass system formed in the stack and varying in its thickness, comprising at least one spring and an element suspended via the spring by: removing: at laterally different positions, starting from a back side of the substrate facing away from a first etch-stop layer; wherein providing the stack comprises: arranging the first or the second etch-stop layer such that the first or second etch-stop layer comprises a layer thickness varying over a lateral extension of the stack; and arranging the first or second semiconductor layer such that the main side of the first or second semiconductor layer facing away from the substrate forms a planar surface.