Illuminated keypad

Details Illuminated keypad Illuminated keypad

2009-05-12

2011-10-11

Leon, Edwin A. (Department: 2833)

Electricity: circuit makers and breakers

Electric switch details

Indicators

Reexamination Certificate

active

08035048

ABSTRACT:
An illuminated keypad is disclosed herein. And embodiment of the keypad comprises a first zone and a second zone; a substrate comprising a substrate surface; a first switch located on the substrate in the first zone; a first light guide having a first light guide first side and a first light guide second side, wherein the first light guide first side faces the first switch; a second light guide having a second light guide first side and a second light guide second side, wherein the second light guide first side faces the substrate surface; a masking layer having a masking layer first side and a masking layer second side, the masking layer first side facing the substrate surface; and at least one cut in the masking layer, wherein the masking layer blocks a light path between the light guides.

REFERENCES:
patent: 6100478 (2000-08-01), LaPointe et al.
patent: 7005595 (2006-02-01), Tang
patent: 7154059 (2006-12-01), Chou
patent: 2007/0257822 (2007-11-01), Lee
patent: 2008/0062670 (2008-03-01), Hong
patent: 2008/0186736 (2008-08-01), Rinko
patent: 2008/0225507 (2008-09-01), Lee
patent: WO 2008/102196 (2008-08-01), None

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