Illuminated touch switch

Details Illuminated touch switch Illuminated touch switch

2007-05-22

2007-05-22

Lefkowitz, Sumati (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

C345S076000

Reexamination Certificate

active

10802308

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.

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