Capacitive touch device capable of distinguishing between conductor and nonconductor
US8842094B2 · kind B2 · utility
3Cited by
0References
13Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 2, 2011 |
| Grant date | Sep 23, 2014 |
| Priority date | — |
| Expiry date | Jan 24, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0447
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A capacitive touch device capable of distinguishing conductor and nonconductor includes a flexible sensor layer receiving a first driving signal, an elastic insulation layer below the flexible sensor layer, and an electrically conductive layer below the elastic insulation layer and receiving a second driving signal synchronous but out of phase to the first driving signal. The flexible sensor layer generates a capacitance variation responsive to an object touching thereon, for identifying the object as a conductor or a nonconductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.