Acoustic touch sensor
US8325159B2 · kind B2 · utility
58Cited by
74References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2005 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Dec 14, 2027 |
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.