Thin keypad assemblies and components for electronics...

Typewriting machines – Key-board or key lever-actuating mechanism – Key-cap or key-stem structure

Reexamination Certificate

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C400S472000

Reexamination Certificate

active

07404682

ABSTRACT:
A method for a keypad assembly including a keycap layer110having multiple user interface key caps flexibly coupled to a carrier portion, a luminescent layer120disposed toward a backside of the plurality of key caps, the luminescent layer carrying a plurality of switch domes each aligned with a corresponding one of the plurality of key caps of the key cap layer. In some embodiments, a backing material is applied to a backside of the user interface key caps.

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“DUREL® Introduces New DFLX™ Durel Flexible Electroluminescent Lamp for High-Quality Keypad Lighting”, http://www.rogers-corp.com/dflx.htm, 2 pages, Jul. 2003.
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