Patent ID: 7679152

Claim:
A micromechanical device comprising: a layer; at least a first slot formed in the layer to define a first oscillation element oscillatably suspended via a first spring portion of the layer; and at least a second slot formed in the layer to define a second oscillation element oscillatably suspended via a second spring portion of the layer, wherein a trench is formed in the second spring portion in a main surface of the layer, wherein a resonance frequency of the first oscillation element is different from a resonance frequency of the second oscillation element, and the first spring portion, the second spring portion and the trench are formed such that, in an anisotropic lateral material removal and/or an anisotropic lateral material addition of the first spring portion and the second spring portion, a ratio of a relative change of the resonance frequency of the second oscillation element to a relative change of the resonance frequency of the first oscillation element ranges from 0.8 to 1.2.