Patent ID: 6117701
Filing Date: 2000-09-12
Classification: G01C,G01P

Abstract:
A method for manufacturing a rate-of-rotation sensor having an oscillator structure and being at least partially configured as an acceleration sensor, the rate-of-rotation sensor including a comb-shaped structure, a suspension mount for the oscillator structure and a substrate, the substrate including a first layer, a second insulating layer and a third layer, the method comprising the steps of:patterning the comb-shaped structure and conductor traces from the third layer;after patterning the comb-shaped structure, at least partially etching the second insulating layer which is provided underneath the comb-shaped structure;removing at least a portion of a passivation layer on the first layer in a region where the oscillator structure is to be patterned;ablating the first layer to a particular thickness using a dry etching process in the region where the oscillator structure is to be patterned; andpatterning the oscillator structure from the first, the second insulating, and the third layers.