Acoustic Touch Sensor
11 Assignments
0 Petitions
Accused Products
Abstract
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.
11 Citations
40 Claims
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1-20. -20. (canceled)
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21. A touch sensor, comprising:
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a substrate capable of propagating acoustic waves, the substrate including a first surface having a touch sensitive region and including a second surface intersecting the first surface along a first edge, the first edge being configured to propagate a first acoustic wave along the first edge, the first surface being configured to propagate a second acoustic wave across the touch sensitive region, the second acoustic wave being based on the first acoustic wave; and a wave converter for converting between the first and second acoustic waves, the wave converter comprising partially reflecting elements being formed on the substrate. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification