Acoustic touch sensor utilizing edge waves
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United States of America Patent
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Jan 27, 2015
Issued Date -
N/A
app pub date -
Jul 15, 2011
filing date -
Apr 14, 2004
priority date (Note) -
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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.
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