Capacitive sensing device comprising perforated electrodes
US9939956B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2015 |
| Grant date | Apr 10, 2018 |
| Priority date | — |
| Expiry date | Oct 29, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/960765
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
This invention relates to a capacitive sensing device comprising (i) at least one capacitive electrode (12) with a substantially conductive material arranged so as to form a conductive surface (51); (ii) at least one guard component placed close to said at least one capacitive electrode (12); said capacitive electrode(s) (12) comprises(comprise) at least one opening (52) without conductive material arranged within or on the edge of the conductive surface (51) so as to reduce the coupling capacitance between said capacitive electrode(s) (12) and said guard component(s).The invention also relates to an apparatus implementing the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.