Patent ID: 11320938

Abstract:
A touch panel as thin or thick as desired has increased touch sensitivity and decreased sensitivity to water includes. The panel or sensor includes a substrate having first and second surfaces and an edge between the surfaces defining a thickness. First and second pluralities of echelons are arranged on the substrate in first and second arrays along first and second centerlines. Each echelon in the pluralities of echelons is formed at an angle relative to their centerlines. First and second shear transducers are mounted on the edge of the substrate and are configured to generate shear waves in a source wave mode in a direction along their centerlines. The shear waves are reflected at the angle by the one or more of the plurality of echelons in the arrays to a sensing wave or the shear wave is converted to a different wave mode than the source mode. The sensing waves are reflected off of an edge opposing the centerlines and are sensed by the transducers.