Patent ID: 6680826
Filing Date: 2004-01-20
Classification: G11B,H01L

Abstract:
A piezoelectric device comprising: an integral body of piezoelectric material having a length and width greater than its thickness, wherein the device further includes, in contact with said body, respective pairs of electrodes, wherein the electrodes of each pair are opposed in the thickness direction, and wherein the pairs are spaced in a direction transverse to said thickness direction, wherein said body deflects along said transverse direction when a voltage is applied to said electrode pairs, wherein said integral body of piezoelectric material is an elongated plate and said transverse direction is the width direction of the plate, wherein the device is configured to exhibit a plane of symmetry extending longitudinally of the plate between the respective pairs of electrodes, wherein said electrodes are planar electrodes applied to respective surfaces of said integral body of piezoelectric material, and in that on only one surface respective electrodes of each pair are separated by a narrow gap in said plane of symmetry.