Microelectromechanical system and method for manufacturing a microelectromechanical system
AssigneeRobert Bosch GmbH
InventorRolf Scheben
Life of this patent
Estimating the term…
Abstract
A microelectromechanical system, including a substrate having a major plane of extension. The microelectromechanical system includes a mass structure. The mass structure is formed to be movable relative to the substrate in a vertical direction, perpendicularly to the major plane of extension. The mass structure includes an electrode structure. The substrate includes a counter-electrode structure. The electrode structure and the counter-electrode structure are coupled capacitively. The mass structure has a deformation in a resting state of the microelectromechanical system. The electrode structure and/or the counter-electrode structure are formed as a function of the deformation of the mass structure.
Claims7
A microelectromechanical system, comprising:
- a substrate having a major plane of extension;
- a mass structure formed to be movable relative to the substrate in a vertical direction, perpendicularly to the major plane of extension, the mass structure including an electrode structure;
- wherein the substrate includes a counter-electrode structure, the electrode structure and the counter-electrode structure being coupled capacitively, and wherein the mass structure has a deformation in a resting state of the microelectromechanical system, the electrode structure and/or the counter-electrode structure being formed as a function of the deformation already present in the resting state of the mass structure,
- wherein the mass structure is formed with the deformation in such a manner, that in a state of maximum deflection of the mass structure and/or in the resting state of the microelectromechanical system, the mass structure is a shorter distance from the substrate in a first region than in a second region, the electrode structure and/or the counter-electrode structure being formed as a function of the deformation of the mass structure in such a manner that:
- the electrode structure has a recess in the first region, and/or in the vertical direction, the electrode structure has a lower thickness in the first region than in the second region, and/or
- the counter-electrode structure has a recess in the first region, and/or in the vertical direction, the counter-electrode structure has a lower thickness in the first region than in the second region.
Dependencies are inferred from the claim text.