Patent ID: 7692317

Claim:
An apparatus for housing a micromechanical structure, comprising: a substrate having a main side on which the micromechanical structure is formed; a photo-resist material structure surrounding the micromechanical structure to form a cavity together with the substrate between the substrate and the photo-resist material structure, wherein the cavity separates the micromechanical structure and the photo-resist material structure and has an opening; and a closure for closing the opening to close the cavity, wherein the photo-resist material structure is formed of a first photo-resist layer and a second photo-resist layer, wherein a cap portion is formed in the first photo-resist layer and a frame portion in the second photo-resist layer, the first photo-resist layer consists of a first photo-resist material and the second photo-resist layer of a second photo-resist material, the first photo-resist material and the second photo-resist material are a positive resist, and the first photo-resist material has a lower resist sensitivity than the second photo-resist material.