Patent ID: 7501302
Filing Date: 2009-03-10
Classification: H02K

Abstract:
1. A method of manufacturing a micro-generator, the method comprising: forming an integrated circuit (IC) wafer comprising at least one of: a plurality of first metal coils, a plurality of trenches associated with the first coils, and a layer of magnetic material; forming a MEMS wafer, the MEMS wafer comprising a movable micromechanical element and at least one of: a plurality of first metal coils, a plurality of trenches associated with the first coils, and a layer of magnetic material; forming a plurality of micro-magnets from the magnetic layer, a micro-magnet being associated with each trench; bonding the MEMS wafer to the IC wafer to define a micro-generator wafer such that, in response to the micromechanical element moving, the micro-magnets move within the trenches relative to the first metal coils thereby inducing a voltage in the first metal coils; and dicing the micro-generator wafer to form individual micro-generators.