Monday, September 7, 2009
Edge Backlights
LED backlights offer a longer operating life -50,000 hours minimum - and are brighter than ELPs. Being a solid state device,they are configured to operate with typically a +5VDC power(and optionally 12VDC power),so they do not require an inverter.The LED backlight has two basic configurations;Array & edge lit.In both types the LEDs are the light source that are focused into a diffuser that distributes the light evenly behind the viewing area.In Array lit configuration there are many LEDs mounted uniformly behind the display,it offers more uniform and brighter lighting & consumes more power.In Edge lit configuration,the LEDs are mounted to on side(typically the top)focused edge on into the diffuser,it offers a thinner package and consumes less power.
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