30 Jun '12, 12am

OMC – New technology enables bright white / blue bespoke backlights from 5V ...: Commenting, commercial director...

OMC – New technology enables bright white / blue bespoke backlights from 5V ...: Commenting, commercial director...

The Profiled Backlights make use of OMC’s side-firing backlight emitters. The LEDs have been designed to couple light efficiently into the lightguide, and until now, each LED has had a 2-pin connection to the user’s circuit board. Dual-chip emitters, in which each LED package contains two LED chips, are often used for Profiled backlights because it is possible to get twice as many LED chips around the backlight edge thereby doubling the brightness and enhancing the uniformity of the backlight. Traditionally, dual-chip backlight emitters have both chips in series with a single anode and cathode. Therefore, white and blue displays can require a voltage supply of 8V or more (the forward voltage of a blue or white LED chip is 3-4V, there are two chips in series and some overhead is needed). This has meant, though, that if the user was working at lower voltages they would typic...

Full article: http://www.electropages.com/2012/06/omc-technology-enable...

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