Capacitive proximity and/or touch switch
US8182104B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 5, 2008 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Jun 12, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/960785
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A capacitive proximity and/or touch switch has an electrically conductive body bridging a spacing distance between an at least partially translucent, electrically insulating cover plate and a carrier plate. The electrically conductive body has a sensor surface at the end thereof facing the cover plate. The sensor surface is connected to an evaluation circuit via the electrically conductive body. A light source is associated with the sensor surface, the light of which implements an optical display in an operating region defined by the sensor surface at the front of the cover plate. The light source is disposed at an offset to the position of the operating region, and the electrically conductive body has a reflector region configured such that light emitted from the light source can be deflected in the direction of the operating region by the reflector region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.