Patent ID: 6584843
Filing Date: 2003-07-01
Classification: G01C

Abstract:
A gyroscope comprising:a tuning fork having vibrating beams; a pair of substrates which are disposed one at each side of said tuning fork, at least surfaces thereof being insulative; a pair of drive electrodes which are provided on surfaces of said pair of substrates such that said drive electrodes oppose each other, said drive electrodes extending along a longitudinal direction of said vibrating beams such that a portion of each of said drive electrodes opposes one of said vibrating beams and the remaining portion of said drive electrodes protrudes from said one of said vibrating beams, said drive electrodes being capacitively coupled to said vibrating beams and driving said vibrating beams in a direction parallel to said pair of substrates when a voltage is applied to said drive electrodes in the same phase for driving said vibrating beams; and detection electrodes which are capacitively coupled to said vibrating beams, and which detect displacements of said vibrating beams in a direction perpendicular to said substrate and a vibrating direction of said vibrating beams.