Capacitive touch panel with height determination function
US10126883B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2012 |
| Grant date | Nov 13, 2018 |
| Priority date | — |
| Expiry date | Jan 6, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04101
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A capacitive touch sensor includes a sensor substrate and an array of electrode elements formed over the sensor substrate. Each electrode element of the array includes at least one of a first electrode group comprising at least two drive electrodes and at least one sense electrode, or a second electrode group comprising at least two sense electrodes and at least one drive electrode. The respective electrodes of the first or second electrode group are arranged to form multiple capacitances over different coupling distances. A controller is operatively coupled to the array of electrode elements, the controller configured to determine a distance of an object relative to the surface of the touch sensor based on variations in the multiple capacitances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.