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Backlighting for Membrane Switches

(August 2006) posted on Thu Aug 03, 2006

Lumitex, Inc.


Membrane switch OEMs who design their products with irregular shapes may find the solution they need in UniGlo, a backlighting technology from Lumitex. The company designed UniGlo to provide bright (up to 75 ft-L), uniform, low-power, and low-cost backlighting. UniGlo’s fiber-optic panels are positioned between the overlay and the circuit board/metal dome assembly. The fiber-optic tail is routed to the LED, which is soldered into an appropriate place on the circuit board. The panels can backlight an area up to 4 x 6 in. (102-152 mm) with one LED, and they’re designed to be thin enough (0.013 in./0.33 mm) to not interfere with the switch’s tactile feel. Power consumption is 2-4 VDC, 5-30 mA for a single LED backlight. Lumitex says the panels have been tested to more than 5 million actuations and provide backlight lifetimes up to 100,000 hr (depending on LED source used). Lumitex, Inc., 8443 Dow Circle, Strongsville, OH 44136, 440-243-8401, fax: 440-243-8402, Web: www.lumitex.com.


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