Acoustic touch sensor

G - Physics – 06 – F

Patent

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Details

G06F 3/033 (2006.01)

Patent

CA 2563357

A touch sensor comprises a substrate capable of propagating acoustic waves and includes a first surface having a touch sensitive region. A first sidewall intersects the first surface along a first edge. The first edge is configured to propagate a first acoustic wave along the first edge. The first acoustic wave may be a one-dimensional edge wave. A wave converter converts the first acoustic wave to a second acoustic wave, and the first surface is configured to propagate the second acoustic wave across the touch sensitive region.

La présente invention a trait à un capteur tactile comportant un substrat apte à la propagation d'ondes acoustiques et comprenant une première surface présentant une zone tactile. Une première paroi latérale entrecroise la première surface le long d'un premier bord. Le premier bord est agencé pour la propagation d'une première onde acoustique le long du premier bord. La première onde acoustique peut être une onde de bord unidimensionnel. Un convertisseur d'ondes convertit la première onde acoustique en une deuxième onde acoustique, et la première surface est agencée pour la propagation de la deuxième onde acoustique à travers la zone tactile.

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