Single-layer touch sensors
US8456443B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2009 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | Sep 27, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0442
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A two-dimensional capacitive sensor device comprises first, second, and third sensor electrodes. The first sensor electrode has a varying width along a first direction, a maximum width at a first edge along the first direction, and a minimum width at a second edge along the first direction. The second sensor electrode has a varying width along the first direction and substantially identical widths at the first edge and second edge. The third sensor electrode has a varying width along the first direction, a minimum width at the first edge, and a maximum width at the second edge. The first, second, and third sensor electrodes have substantially equal surface area and are arranged in a first sensor cell with the second disposed between the first and third sensor electrodes. The two-dimensional capacitive sensor device comprises a plurality of sensor cells disposed in a repeated fashion in a single layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.