Illuminated touch switch
US7221359B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2004 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Nov 10, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K2360/143
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A touch sensitive electroluminiescent (EL) switch is provided in a vehicle for actuating a vehicle accessory. A dielectric layer is adjacent to a rear electrode layer. A phosphor layer is adjacent to the dielectric layer. A transparent electrode layer includes a pad adjacent to the phosphor layer, and a substantially concentric conductive trace is adjacent to the phosphor layer and is spaced from the pad in the transparent electrode layer. The phosphor layer is disposed between the rear electrode layer and the pad and defines an illuminated region when energized by a first voltage. The substantially conductive trace and the pad cooperate to define a detection region substantially coinciding with the illuminated region when energized by a second voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.