Patent ID: 8854339
Filing Date: 2014-10-07
Classification: G06F

Abstract:
1. A shear-mode transducer for generating or receiving an acoustic edge wave in a touch sensor having a substrate with a first surface having a touch region and a second surface intersecting the first surface along a first edge, the acoustic edge wave propagating along the first edge, the shear-mode transducer mounted on the substrate on the second surface, the shear-mode transducer comprising: a shear-mode piezoelectric element, the shear-mode piezoelectric element generating shear motion in a direction relative to a plane of the second surface defined by X and Y axes so as to couple to the acoustic edge wave, wherein the shear motion is polarized diagonally in the plane of the second surface defined by the x and y axes; and a first electrode and a second electrode disposed on the shear-mode piezoelectric element to provide an active region of the shear-mode piezoelectric element, said active region comprising a cross-sectional area of the acoustic edge wave.