Touch sensing apparatus and method for detecting approach
US8680877B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2011 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | May 7, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04108
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch sensing apparatus includes an approach sensing electrode unit including a plurality of first approach sensing electrode arrays disposed on a substrate and a plurality of second approach sensing arrays disposed adjacent to the first approach sensing electrode arrays, a voltage supply unit to supply a voltage to any of the first approach sensing electrode arrays and the second approach sensing electrode arrays, a signal generation unit to generate an approach sensing signal by detecting a variation of capacitance generated between the first approach sensing electrode arrays and the second approach sensing electrode arrays, the variation of capacitance occurring in a 3-dimensional (3D) approach sensing region, and an information generation unit to generate contact information corresponding to the approach sensing signal generated by the signal generation unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.