Acoustic touch sensor utilizing edge waves
US8941624B2 · kind B2 · utility
53Cited by
80References
20Claims
0Family size
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Key dates
| Filing date | Jul 15, 2011 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Apr 3, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0436
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.